The Treatment of Psychopathic and Antisocial
Personality Disorders: A Review
Jessica H Lee, BSc., MSc., M.Phil. 1
Clinical Decision Making Support Unit
There is a considerable amount of controversy surrounding the treatment ofpsychopathic and antisocial personality disorders. Different methods of treatmenthave been tried with those diagnosed with the condition, but the lack ofcontrolled follow-up research in this area has made it difficult to evaluate theireffectiveness. What has emerged, however, is that the core elements ofpsychopathy make it one of the most difficult disorders to treat. This has not beenhelped by the fact that there is still considerable debate surrounding the aetiologyof the syndrome and that it is defined by incompatible legal and clinical systems.
As a consequence, the ‘treatability’ of psychopathic disorder has been questionedby a number of psychiatrists and psychologists and alternative methods ofmanaging the disorder have been put forward
The treatment of ‘psychopathic disorder’ has been a controversial issue among psychiatrists ever sincethe concept was first introduced to psychiatric nosology during the latter part of the last century. Muchof this controversy stems from a lack of consensus among clinical psychiatrists and psychologists onthree critical issues. The first issue concerns the nature of the psychopathic condition and the specificclass of persons to whom it applies. The second issue relates to the most appropriate goals and targetsfor the clinical management of the disorder, the form treatment should take, and to how successfultreatment outcome should be evaluated by the clinicians involved. The third issue concerns the extent towhich ‘psychopathic’ behaviours are treatable and to whether evidence of psychological change duringtreatment implies reduced risk of re-engaging in such behaviour once treatment has culminated.
To assess treatability it is essential to first specify the nature of the disorder to be treated and, therefore,the targets of therapeutic change. Although etymologically the term ‘psychopath’ simply meanspsychologically damaged, it has long been used in Britain and America to refer to a socially damagedperson who engages in impulsive and irresponsible behaviour, of an antisocial or deviant kind (Hare,1985; World Health Organisation, 1992; American Psychiatric Association, 1994).
A narrower meaning of the term ‘psychopathic’ first appeared in the work of Koch (1891) who underthe heading ‘Psychopathic Inferiorities’, grouped abnormal behavioural states, which he believedresulted from psychological weaknesses in the brain. Koch's work was succeeded by the writings ofSchneider (1923) who in Psychopathic Personalities
established psychopathy as a subclass of abnormalpersonality and suggested ten different forms of the psychopathic syndrome.
It was Henderson’s Psychopathic States
(1939), however, that set the pattern that was to latercharacterise Anglo-American psychiatric delineations of the disorder, by confining attention only to thegrossest forms of psychopathic abnormality and emphasising the antisocial nature of the condition.
Henderson's contribution to the concept was his threefold subdivision of psychopaths into aggressive,inadequate and creative forms. Later authors such as Cleckley (1964) and McCord and McCord (1964)
1 The author would like to thank Dr. Adrian Grounds at the Institute of Criminology, Cambridge for hissupervision of the thesis from which this monograph is derived.
went even further by narrowing the category to aggressive psychopaths and establishing core criteria forthe disorder centred around antisocial behaviours. Indeed, Cleckley’s publication of The Mask of Sanity
(Fourth ed., 1964) has proved to be one of the most influential sources of the view that thepsychopathic personality is a distinct clinical entity.
Today psychiatrists and psychologists are still debating the nature and aetiology of the psychopathiccondition. In fact, since Henderson’s publication of Psychopathic States
, numerous reclassifications ofpsychopathy have been put forward in the form of ‘sociopathy’ (American Psychiatric Association,1952); ‘primary’ and ‘secondary psychopathy’ (Blackburn, 1975) and the more recent notions of‘dissocial’ and ‘antisocial personality’, recommended in the current editions of the InternationalClassification of Diseases and Related Health Problems
(World Health Organisation, 1992) and theDiagnostic and Statistical Manual of Mental Disorders
(American Psychiatric Association, 1994). Thelast two categories, however, together with Hare's Psychopathy Checklist (1985) have been able toestablish some validity as core diagnostic entities for psychopathy and as a result are now the mostwidely used classifications of the disorder (Coid, 1993).
In England and Wales, the law has accepted the medical view that antisocial behaviour may result froma psychological abnormality, distinct from mental illness, and that it may be appropriate to divertoffenders suffering from this disorder to the mental health system for treatment rather than punishment.
However, the statutory category of 'psychopathic disorder' is different from clinical classifications of thecondition. In its legal use, for instance, 'psychopathic disorder' has no specific clinical meaning and is ageneric term based solely on the presence of antisocial behaviour, as distinct from the range of featuresrequired for a clinical diagnosis of the syndrome (Higgins, 1995). Although around 25% of patients inEnglish maximum security hospitals are detained under the legal concept of ‘psychopathic disorder’(Harding, 1992; Dolan and Coid, 1993), psychiatrists have traditionally expressed their dissatisfactionwith the definition on the grounds that it is too vague and ill defined to be a useful diagnostic category.
According to Chiswick (1992), for instance, there is a lack of understanding among psychiatrists aboutthe nature and aetiology of the disorder and there has been little in the way of legal explanation for whatexactly is meant by the term. Tests with those who have been legally defined as psychopathic have alsofound that the disorder has a high comorbidity with other clinical syndromes, which has an importantbearing on its treatment. (Blackburn, 1990; Dolan and Coid, 1993).
Few psychiatrists would deny that the controversy surrounding the classification of psychopathy hasdistracted from efforts to treat the syndrome. Indeed, there is a noticeable lack of research material inthis area and what little there is, has yielded disappointing results. Although numerous methods oftherapy have been tried with psychopathic patients, including pharmacological treatments, physicaltreatments, cognitive and behavioural approaches, therapeutic community approaches and individualand group psychotherapy, few have been able to bring about any great improvement in the patientsconcerned.
It was Cleckley, whose book The mask of Sanity
(Fourth ed., 1964) first drew attention to the lack ofsuccess psychiatrists had in their efforts to treat the typical psychopath and to how the essentialelements of the disorder made it a particularly unapproachable and difficult condition to manage. Sincethen more and more psychiatrists have expressed doubts about their ability to deal with this group, withan increasing number expressing concern at the level of dangerous and disruptive behaviour displayedby psychopathic patients, as well as their poor motivation for change and willingness to lie about theirtherapeutic progress. Higgins (1995) argues that the term psychopath has acquired a pejorativeconnotation within the mental health and social services. The implications are that the patient isuntreatable, has no proper place in a hospital and is disliked by clinical staff. Indeed, the term is oftenemployed in order to reject patients for treatment and for this purpose may be deliberately applied topatients with other psychiatric disorders such as schizophrenia or hypomania (Coid, 1988).
What little research is available, however, does indicate that although the core antisocial behaviours ofthe psychopath are difficult to manage, some of the associated behaviours displayed by the condition,and more commonly linked with other clinical syndromes, may be responsive to clinical intervention.
This presents psychiatrists with an unusual treatment dilemma and begs the question of whether it isbetter to target the untreatable aspects of psychopathy on the grounds that they are what led to thehospital admission in the first place, or the alternative symptoms of the condition, which are known tobe more responsive to intervention.
Recidivism research is further testimony to this treatment dilemma. Although the available follow-upstudies of psychopathic patients do not enable us to relate outcome to specific treatments, such studiesdo indicate that patients with psychopathic disorder have higher recidivism rates than the mentally illand that a history of prior criminal convictions is the factor most strongly associated with re-convictionafter release (Black, 1982; Tennent and Way, 1984; Murray, 1989). It is on the basis of this evidence,that some clinicians believe that even if psychological change can be brought about during therapy, it isunlikely that this will be maintained beyond release.
Research of this kind has also fuelled the arguments of those concerned with the civil rights of patients,and in particular the ethics of detaining offenders indeterminately within the hospital regime. Indeed, ifthe criminal aspects of the psychopathic condition are unlikely to be alleviated with treatment, then thislends support to the argument that psychopathic offenders should be in prison rather than hospital,where sentences are predetermined (Grounds, 1987; Chiswick, 1992; Robertson, 1992). Under thepresent system, those psychopathic patients who are unresponsive to treatment are languishing in secureunits for a much longer period than would be demanded by legal punishment for their crime.
The first chapter of this thesis considers some of the most current classifications of psychopathicdisorder together with the legal category of the syndrome. The second chapter then outlines the mostcommon treatment settings for psychopathic patients, together with the principle methods of treatingthe condition. Four models of treatment currently in use with psychopaths are also reviewed in thissection. Chapter three then evaluates the success of these methods, by drawing on the availableoutcome research in this field and addressing some of the difficulties presented by psychopathicsubjects. The conclusions that can be drawn from this research are then discussed, together withrecommendations for the treatment of psychopathy in the future.
CONTEMPORARY CLASSIFICATIONS OF PSYCHOPATHIC
ICD-10: Dissocial Personality Disorder
The International Classification of Diseases is one of the most long-standing diagnostic classifications of
mental and physical disorders. It is a categorical classification, organised into 17 major sections, which
divide conditions into types depending upon their defining features. The ICD-10 Classification of
Mental and Behavioural Disorders
(1992) is part of a series of clinical descriptions and guidelines that
make up the tenth revision of the International Classification of Diseases and Related Health Problems
Disorders of personality are listed in the ICD-10 under subsection F60 to F69. In its notes on selectedcategories, the ICD suggests that this was not an easy category to write guidelines for, with concernsabout the difference between observation and interpretation made by clinicians, as well as the number ofcriteria that must be filled before diagnosis can be confirmed, still unresolved by the ICD workingcommittee. It also states that the personality disorders described are not mutually exclusive and canoverlap in some of their characteristics.
Personality disorders are defined as deeply ingrained and enduring attitude and behaviour patterns thatdeviate markedly from the culturally expected range. They are not secondary to other mental illnesses,or attributable to gross brain damage or disease, although they may precede and coexist with otherdisorders. Disorders of personality are regarded as developmental conditions which tend to appear inlate childhood or adolescence and continue to manifest into adulthood. Diagnosis of a personalitydisorder, therefore, would not usually be appropriate before the age of sixteen years, although thepresence of conduct disorder during childhood or adolescence can indicate a predisposition towards thesyndrome.
Dissocial personality disorder (F60.2) is grouped under the heading ‘Specific personality disorders’along with syndromes such as Paranoid, Schizoid and Histrionic disorder. These conditions are definedas a
‘.severe disturbance in the characterological constitution and behaviouraltendencies of the individual, usually involving several areas of the personalityand nearly always associated with considerable personal and social disrupt
(Section F60, World Health Organisation,
The classification of Dissocial personality disorder is intended to include previous diagnostic categoriesof sociopathic, amoral, asocial, psychopathic and sociopathic personality disorders, but excludesconduct disorder and emotionally unstable personalities. The condition is described as usually coming toattention because of a gross disparity between behaviour and the prevailing norms and is characterisedby the WHO (1992) by the following signs and symptoms:
• callous unconcern for the feelings of others;
• gross and persistent attitude of irresponsibility and disregard for social norms, rules and obligations;
• incapacity to maintain enduring relationships, though having no difficulty in establishing them;
• very low tolerance to frustration and a low threshold for discharge of aggression, including
• incapacity to experience guilt and to profit from experience, particularly punishment;
• marked proneness to blame others, or to offer plausible rationalisations, for the behaviour that has
brought the patient into conflict with society.
Persistent irritability may also be an associated feature.
Clear evidence is usually required of at least three of the above traits before a confident diagnosis ofDissocial personality disorder can be made.
The ICD-10 appears to have made an attempt to assemble the core personality traits of the psychopathicpersonality and have produced criteria which overlap with other classifications of the syndrome.
Although the ICD suggests an emphasis on personality characteristics rather than types of behaviour,many of the features of dissocial personality may have to be inferred from a patient’s behaviour patternsrather than a true understanding of their underlying personality abnormalities. It has also been suggestedthat criterion (g), persistent irritability, demonstrates a potential for overlap with two criteria for ICD’s‘emotionally labile personality disorder’ and does not easily distinguish an implied personality trait froman affective disturbance (Coid, 1993).
DSM-IV: Antisocial Personality Disorder
The Diagnostic and Statistical Manual of Mental Disorders
is a categorical classification produced by
the American psychiatric Association, which claims to provide codes and terms which are fully
compatible with the ICD-10. Indeed, in its introduction the DSM-IV explains that the clinical and
research drafts of the ICD-10 were thoroughly reviewed by the DSM working groups with the intention
of increasing the congruence, and reducing meaningless differences in wording between the two
Personality disorders are coded in DSM-IV along a separate axis (axis II) from the major mentaldisorders and subdivided into 11 categories (301.0 to 301.9). Personality disorder is defined as an
enduring pattern of inner experience and behaviour that deviates markedly fromthe expectations of the individual’s culture, is pervasive and inflexible, has anonset in adolescence or early adulthood, is stable over time and leads to distressor impairment
(The American Psychiatric Association, 1994)
The personality disorders listed in the DSM-IV are grouped into three clusters based upon descriptivesimilarities.
Antisocial personality disorder is included under cluster B, together with Borderline, Histrionic andNarcissistic personality disorders. Individuals with these conditions are described as ‘dramatic,
emotional or erratic’ as opposed to the anxious and fearful nature of individuals in cluster C, or the oddand eccentric characteristics of those who make up cluster A. It is noted, however, that this clusteringsystem has not been consistently validated and that individuals can frequently present with co-occurringpersonality disorders from different clusters.
Like the ICD-10, the DSM is an attempt to define categories on the basis of traits, which only wheninflexible, maladaptive and cause ‘significant functional impairment or subjective distress’ constitutepersonality disorder. These behaviours should not be a manifestation of another mental disorder ormedical condition nor should they be the psychological effects of a chemical substance. It is also pointedout that these behaviours must be distinguishable from characteristics that emerge in response tospecific situational stressors and that a personality disorder should only be diagnosed when the definingcharacteristics appear before early adulthood.
The essential feature of Antisocial personality disorder (301.7) is the pervasive pattern of disregard for,and violation of the rights of others occurring since fifteen years of age, as indicated by the three ormore of the following (A.P.A. 1994):
• failure to conform to social norms with respect to lawful behaviours as indicated by repeatedly
• deceitfulness, as indicated by repeated lying, use of aliases, or
• irritability and aggressiveness, as indicated by repeated physical fights or assaults
• reckless disregard for safety of self and others
• consistent irresponsibility, as indicated by repeated failure to sustain consistent work behaviour or
• lack of remorse, as indicated by being indifferent to, or rationalising having hurt, mistreated, or
The individual must be at least eighteen years of age before a reliable diagnosis can be made and thereshould also be some evidence of conduct disorder in the patient concerned, with onset before fifteenyears.
Several epidemiological studies have used standardised diagnostic criteria for Antisocial personalitydisorder, making it the most comprehensibly studied personality disorder category in this area ofresearch from any contemporary glossary (Dolan and Coid, 1993). Although the DSM-IV criteria havesometimes been criticised for being too long and cumbersome, antisocial personality disorder is the onlyaxis II criteria derived from empirical research and field trials have shown that it has a higher inter-raterreliability than any other axis II category (Mellsop et al, 1982).
Hare’s Psychopathy Check-list
Hare’s Psychopathy Check-list is a unidimensional scale of psychopathic disorder which includes both
personality traits and antisocial behaviour. Hare’s notion of psychopathy is based upon the clinical
concept of the psychopath provided by Cleckley in the five editions of his work, The mask of Sanity
(Fourth ed., 1964). Cleckley believed that psychopaths suffered from a central and deep-seated semantic
disorder in which meaning related, associative and elaborative processes are missing. He suggested that
these deficits are well masked by a well functioning, expressive and receptive process, whereby the
psychopath can express himself vividly and eloquently, often conning others with his superficial charm.
Hare added to this theory the notion that psychopaths differ from normal persons in the temporalintegration of rewards and punishments. He argues that psychopathy is characterised by a relativelysteep temporal gradient of fear arousal and response inhibition. This means that as the temporalremoteness of punishment increases, the amount of fear elicited by cues associated with the punishmentdecreases. To the extent that anticipatory fear mediates response inhibition, the psychopath is unlikelyto inhibit a response for which the reward is immediate and the anticipated punishment is remote in time(Hare and Quinn, 1971).
Initially Hare took the list of 16 characteristics considered to be typical of the psychopath and appliedthem to a series of prisoners. After further studies, Hare expanded the preliminary PCL to a 22-itemversion. Two items were subsequently dropped from this list and a further item modified to create arevised version of the checklist (PCL-R) as shown below.
Need for stimulation / proneness to boredom
Failure to accept responsibility for own actions
Ratings of 0-2 apply to each item, which can give a maximum possible score of 44. At a cut-off scoreof 30 or above, a subject would be designated a psychopath.
Recently Hare and colleagues have demonstrated by factor analysis, that the PCL and PCL-R containtwo correlated factors that have distinct patterns of inter-correlations with other variables. The firstfactor is made up of the personality traits considered to be descriptive of the syndrome and includesitems (a), (b), (d) - (h) and (p). The second factor consists of the traits that reflect socially deviantbehaviour, including items (c), (i), (j), (l) -(o), (r) and (s). According to Harpur et al (1988) theyrepresent a chronically unstable, antisocial and socially deviant lifestyle.
In comparison with the length of the ICD and DSM classifications, the PCL-R measures favourably interms of brevity. Some authors have criticised the PCL-R, however, for including too many criteriainvolving criminal behaviour and excluding other personality traits that have been found relevant topsychopathic behaviour. Hare’s emphasis on obtaining information from case files, in addition to thatobtained at interview also gives his classification a marked advantage over the other two scales in termsof reliability. Because psychopaths can deceive and manipulate others in prison and hospital settings asfrequently as they do outside, it is unwise to use self report studies as a means of assessing thepsychopath. Indeed, Hare himself observed large discrepancies between the verbal reports obtainedfrom psychopaths in interviews and questionnaires and their documented behaviour (Hare, 1990). Hareand his colleagues have been able to demonstrate high inter-rater and test-retest reliability using both thePCL and PCL-R on prisoners and forensic psychiatric hospital in-patients, when the checklist is used byproperly trained researchers (Hare, 1980).
The ICD-10, DSM-IV and Hare’s Psychopathy Checklist have been able to establish some validity ascore diagnostic entities for the psychopathic syndrome. In fact on re-examination all three of theseclinical classifications appear consistent with several traditional views of the personality traits and typesof behaviour defining the construct of psychopathy. A series of earlier authors, for instance, havedescribed psychopaths as selfish, lacking in shame and empathy, and having a callous disregard for otherindividuals, with an incapacity to maintain enduring relationships. They have also described them asunable to control their impulses or to delay gratification and as demonstrating a high propensity forlying, thrill seeking and poor judgement (McCord and McCord, 1956; Cleckley, 1964; Craft, 1966;Blackburn, 1986). Clinical practice measured by surveys with British forensic psychiatrists and prisonmedical officers have also confirmed very similar or overlapping features. (Davies and Feldman, 1981).
Perhaps the most distinguishable feature of the psychopath, however, appears to be their highpropensity for violence and their disregard for law enforcement, which explains why a high number ofthose suffering with the disorder come in contact with the legal system. Indeed, early onset of antisocialbehaviour, including that of conduct disorder, and engaging in activities that are grounds for arrest arecentral items in most classifications of the disorder. A number of researchers have paid particularattention to this feature and produced a considerable amount of evidence to demonstrate the degree ofaggression and intolerance characteristic of the psychopathic condition. Williamson, Hare and Wong(1987) for instance, in an examination of the violent offences of psychopathic prisoners compared tonon-psychopathic groups, found that the victims of psychopaths tended to be male and unknown, andthat their violence tended to have revenge or retribution as the motive. In general psychopathic violencewas callous and cold-blooded or part of an aggressive or macho display, but without the affectivecolouring that accompanied the violence of the non-psychopathic group (Williamson et al, 1987). In alongitudinal study of male psychopaths and their criminal careers, Hare, McPherson and Forth (1988)also found that psychopaths, as measured on the PCL-R, engage in an inordinate amount of violenceand aggressive behaviour compared with other non-psychopathic criminals.
The legal classification of ‘Psychopathic Disorder’
Mental health legislation has existed in Britain for over two centuries and in England and Wales is
revised about every twenty five years. The term ‘psychopathic personality’ was first incorporated into
statute with the Mental Health Act of 1959. This saw the replacement of older notions of ‘moral
insanity’ and ‘moral defect’, which had their origins in the work of Pinel (1809) and the later writings of
James Prichard (1835) and Henry Maudsley (1879).
Under the current Mental Health Act 1983, which represents the consolidation of the Mental Health Act1959 and the Mental Health (Amendment) Act 1982, ‘psychopathic disorder’ is defined as
a persistent disorder or disability of mind (whether or not including significantimpairment of intelligence) which results in abnormally aggressive or seriouslyirresponsible conduct
Section 1(3) of the Mental Health Act makes it clear that a person may not be dealt with under the act ifsuffering by reason only of promiscuity or other immoral conduct, sexual deviancy or dependence onalcohol or drugs. It also states that subjects within this definition cannot be detained in hospital unless‘treatment is likely to alleviate or prevent deterioration’ (Section 3(2)(b), Mental Health Act, 1983).
This marks a change from the 1959 Mental Health Act which included the phrase ‘and requires or issusceptible to medical treatment’ (Mental Health Act, 1959), within its definition of psychopathicdisorder. It has been argued that this change reveals the doubt experienced by many psychiatristsconcerning their ability to deal with this group.
The Mental Health Act can be used to bring about the compulsory detention of patients in cases wherehospital admission is thought necessary, but the patient is reluctant to be detained, or for anyonesuspected, charged or convicted of a criminal offence. Psychopathic disorder is one of the fourcategories of mental disorder in the Mental Health Act for which compulsory admission may beappropriate. In the case of offenders, the statutory concept of psychopathic disorder is not a cause ofbeing unfit to plead or to stand trial, but may be used to lesson criminal responsibility and as mitigationto get a reduced sentence, to support a hospital order or to form the grounds for a plea of diminishedresponsibility in cases of homicide (Faulk, 1994). Applications can be made for the compulsoryadmission and detention of a patient in hospital for the purposes of assessment or treatment. In bothinstances an application should be founded on the written recommendations of two registered medicalpractitioners approved under Section 12 (2) by the Secretary of State as having special experience in thediagnosis or treatment of mental disorder. In the case of mentally disordered offenders, it must beproved that they were suffering from a mental disorder at the time the offence was committed.
The legal category of ‘psychopathic disorder’ has been heavily criticised by a number of psychiatrists,for being too elastic and ill-defined and for making no contact with any validated psychiatric category ofthe condition. Arguably there has been little legal explanation of the meaning of the term ‘psychopathicdisorder’ or the concepts of ‘abnormally aggressive’ or ‘seriously irresponsible conduct’. In fact the
only term that has received any clarification is the notion of ‘persistent disorder’, which means thatthere must have been signs that the condition has existed for a considerable period, before a patient canbe classified psychopathic. (Mental Health Act Memorandum, 1983). A joint working group of theDepartment of Health and Home Office (1994) under the chairmanship of Dr. Reed, has pointed to thelack of knowledge about the nature and aetiology of the legal concept and the Butler Committee (HomeOffice and Department of Health and Social security, 1975) has even flirted with the idea of dispensingwith psychopathy as a legal category altogether. Indeed, the Mental Health Act 1984 that operates inScotland and the Mental Health Order 1986 currently in operation in Northern Ireland, omit the termfrom their legislation.
Tests carried out with those who have been legally defined as psychopathic have also revealed that ithas a high comorbidity with other clinical conditions. Research conducted by Coid (1992), for instance,which included over 250 patients from maximum security hospitals who had been detained under thelegal notion of the disorder, found that in order to encompass the full range of psychopathologyexhibited by these subjects, multiple axis II personality disorder categories were required. There was anoverall mean of 3.6 categories per subject and less than 10% presented with a single diagnosis ofpersonality disorder using this classification. Coid also found that a number of subjects displayed DSMaxis I syndromes (clinical syndromes) over their lifetime, with a mean of 2.7 categories. The mostcommon condition was depressive disorder, which occurred at some time in the lives of 50% of thesubjects. This was followed in descending order of frequency by dysthymia, hypomania, substance abusedisorders, schizophrenia, brief psychotic episodes and conditions such as phobia, panic attacks, andobsessive-compulsive disorder (Coid, 1992).
Similar findings were also produced in a review of Oxford hospital dossiers conducted by Walker andMcCabe (1973). They revealed that out of the 258 males whose dossiers mentioned psychopathy or itsequivalents, only 25 contained no other psychiatric label. For these patients additional descriptions ofneurosis, hysteria, addiction, schizophrenia and manic-depressive psychosis were common.
METHODS OF TREATMENT
The treatment of patients with psychopathic disorder can take place in a variety of in-patient settings,including special hospitals, regional secure units, intensive psychiatric care units and in conventionalpsychiatric hospitals. In addition there are approximately 600 beds with low to medium provisionwithin the private sector (including Kneesworth House, St Andrews and Stockton Hall) which canprovide long-term hospital care for offender patients who live in parts of the country which are withoutthe resources to treat them. Due to the nature of the psychopathic condition and its link with violentbehaviour, invariably these patients will be detained under civil or criminal compulsory measures. Thepsychiatrist may care for such patients at the initial stage of their presentation to the psychiatric services,while they are being remanded in hospital, after being arrested and charged, or while being detainedunder a hospital or interim hospital order (which is designed to test a patient’s co-operation with andresponse to treatment).
The overwhelming majority of those under the legal category of psychopathic disorder are admitted to
special hospitals and most of this group are detained under hospital orders with restrictions (Section 41,
Mental Health Act, 1983), which means that only the Home Secretary or a mental health tribunal will
have the authority to discharge them (Grounds, 1987). It is estimated that special hospitals admit some
170 to 200 patients annually and have a total population of 1700 patients, of which 25% come under the
legal category of psychopathic disorder (Dolan and Coid, 1993; Faulk, 1994).
The ‘special hospitals’ are those hospitals in England and Wales run by the Special Hospital ServicesAuthority, which provide an in-patient service for psychiatric patients who need to be nursed inmaximum security because of their potential dangerousness. The first special hospitals in England wereoriginally linked to the home office, but after 1948, were brought under the supervision of thedepartment of Health. Admission to a special hospital is controlled by each hospital’s admission panel towhich psychiatric reports must be submitted with the request to take a patient. The patient must be
detainable under the Mental Health Act 1983 and must be considered sufficiently dangerous to requireconditions of special security.
The three special hospitals in England are Broadmoor Hospital in Berkshire, which was the first to beestablished in 1863, Rampton Hospital in Nottinghamshire and Ashworth Hospital in Merseyside, whichwas formed in 1989 from unifying Moss Side Hospital and the recently built Park Lane Hospital.
Regional secure units
Regional secure units (RSUs) are part of the forensic services provided by each regional health
authority, following a recommendation made by the Butler report in 1975, that every region should
provide facilities for the care of difficult and dangerous patients. RSUs, which can provide anything
between 30 and 100 beds, care for those patients who are too dangerous for ordinary hospitals, but not
so disturbed as to require care in a special hospital. Each unit has the capacity to prevent patients from
absconding, but at the same time run a treatment programme that will include, as the patient improves,
parole outside the unit. The patients in the unit will suffer principally from mental illness (mostly
schizophrenia), whilst the remainder will suffer from psychopathic disorder. Around 25% of the patients
will have been referred from NHS hospitals, 20% from special hospitals and 40 to 50%, from the
courts and remand prisons. The rest of the patients in secure units of this kind will have been referred
from the community services or ordinary prisons (Faulk, 1994). Most patients will either be on a
hospital order, with or without a restriction, or treatment order (Section 3, Mental Health Act, 1983),
reflecting their source of referral, and a high number will have had previous convictions and admissions
to other hospitals. However, a few of the patients will be informal, such as ex-patients re-admitted
voluntarily because of a brief breakdown.
It is possible for patients with psychopathic disorder to receive treatment in an out-patient clinic. The
Portman clinic in London is perhaps the most well known service of this kind and offers
psychoanalytical out-patient treatment for adults, adolescents and children who have engaged in
criminality or sexual deviation. A large proportion of the psychopathic patients who attend out-patient
clinics will have had previous contact with the psychiatric services and will be receiving out-patient care
as a follow-up to a period of in-patient treatment. Indeed, a high standard of after care for psychopathic
patients is essential if dangerous behaviour is to be prevented in the future. Out-patient clinics, which
are provided as part of regional forensic psychiatry services, can also provide care for those who, under
the section 9(3) of the Criminal Justice Act 1991, are on a probation order with a condition of
treatment. Out-patient psychotherapy groups, for instance, can be run jointly by psychiatrists and
probation officers. Some regional secure units also have their own out-patient area, with administrative
and treatment facilities.
Treatment in prisons
Although each prison governor is responsible for seeing that there is proper health care for the inmates
in their establishment, not all are willing or have the means to engage in long-term therapy with those
who have mental illness. This is not helped by the fact that the Health Care Centre provided by each
prison is not recognised as a hospital under the meaning of the Mental Health Act and that doctors are
therefore unable to treat any patient against their will, except in certain emergency situations. This
means that some patients may have to remain untreated until they can be granted a transfer to a mental
hospital, and yet transfers of this kind are relatively rare. Having said this, there are a few specialised
prisons or wings which concentrate on treating particular disorders. Grendon Prison, for example, has a
therapeutic community treatment programme for personality disorder and ‘C’ wing in Parkhurst Prison
runs a programme for inmates with severe personality problems.
Assessing the needs of the patient
It is widely recommended that, on arrival at a new hospital, a careful clinical evaluation of psychopathic
patients should be carried out before any strategy of treatment is formulated. Liebowitz, Stone and
Turkat (1986) recommend that an initial out-patient assessment or in-patient evaluation should be
scheduled to last at least 90 minutes. During this consultation the mental health professional, who will
usually be the registered medical officer in charge of the patients treatment (RMO) should take an active
role in obtaining the history of the present disorder. This will include an evaluation of psychiatric
history, medical history, family history, personal history as well as the patients cognitive and affective
levels of functioning. Particular attention should also be paid to the patient’s criminal history and toevidence of previous behavioural disorder, including attention deficit disorder (ADD) in childhood. Anassessment of these factors will rely upon a combination of interviews, psychometric measures(including the MMPI scales, repertory grids and Hare’s Psychopathy Checklist) and file information, inwhich records of social, psychiatric and criminal history can usually be found. Information fromindependent sources, including family members, court records and victims should also be sought.
It is equally important that the psychiatrist gains some impression of the extent to which the patient feelsable to exert control over their behavioural dysfunction, as well as their general attitude to theirantisocial conduct. This will involve an investigation of the lifestyle factors conducive to deviantbehaviour, including attitudes to self and others, interpersonal style and substance abuse. Indeed, themotivation of each patient together with their personal capabilities will have an important bearing ontheir treatment programme. Because the goals of therapy will vary according to each patient’s particularneeds, it is also important to agree upon treatment targets with each individual before treatment starts.
Higgins (1995) also recommends being realistic with the patient about what can be expected fromtherapy.
Approaches To Treatment
The 1983 Mental Health Act provides little in the way of recommendation for the treatment of mentallydisordered offenders. In fact, ‘treatment’ is simply defined as ‘nursing care, habilitation andrehabilitation under medical supervision’. However, numerous methods of treatment have been triedwith psychopathic patients, the principles of which are described below. In most clinical settings aneclectic approach to therapy is preferred, which would usually involve the use of two or more of thesemethods.
The most common forms of medication used with personality disordered patients are neuroleptics,
antidepressants, lithium, benzodiazepines, psychostimulants and anticonvulsants. Many treatments may
take time to become effective and a substantial measure of active patient co-operation with them is
necessary. The danger of violence may be immediate, so although there is no specific anti-aggression
drug, reduction of arousal using the more sedative neuroleptics is often helpful and necessary during a
crisis (Faulk, 1994). It has to be emphasised, however, that medication is only one aspect of patient
management and is complimentary to psychological treatments.
Neuroleptics can have both a tranquillising effect on disturbed behaviour, most notably persistenttension, anger and hostility and a specific antipsychotic effect (Blackburn, 1993). Many clinicians willhave had personal experience of administering neuroleptics to a range of disturbed and aggressivepatients in hospital settings to control crises. Early observations by American psychoanalysts suggestthat low dose neuroleptic therapy (i.e. doses lower than would normally be prescribed forschizophrenics or depressed patients) can be helpful in the reduction of anger, hostility and occasionally,behavioural disturbances, such as suicidal gestures or aggression (Dolan and Coid, 1993).
Antidepressants, such as serotonergic reuptake inhibitors, tricyclics and monoamine oxidase inhibitors(MAOIs) have been used with patients who display persistent dysphoric mood and major or atypicaldepression, such as panic attacks, mood swings and dysthymia (Gunn and Taylor, 1993). Imipramine,one of the tricyclic antidepressants, is the most studied and is probably most effective with psychoticdepression, but has also been used successfully with obsessives and patients with unusual states of pain.
(Gross, 1992). In subjects with personality disorder, MAOIs, have been used to produce a reduction incertain core features including anger control, impulsivity and interpersonal sensitivity. In view of thepotential serious side effects, however, a trial of MAOIs may only be appropriate, after lithium hasfailed.
Lithium is often used in the treatment of psychopathic patients because it can bring about a reduction inimpulsive, explosive and emotionally unstable behaviours. (Stein, 1993). In many parts of the worldlithium has been described as a mood stabilising agent because of its primary action in preventing moodswings in patients with bipolar disorder (Katzung, 1982). Sheard (1971), who has conducted a number
of experiments with lithium, suggests that it is perhaps the closest to being a specific agent for thecontrol of anger and aggressive outbursts in personality disordered patients. It should be remembered,however, that sedation is a side effect of lithium and that high levels of the drug are associated withtremor and uncoordination. It is also possible that the optimum serum level will vary among individualsand will have to be determined for each patient. It is important, therefore, that any patient taking lithiumis carefully supervised (Stein, 1993).
Benzodiazepines are known among clinicians to be highly effective in their control of anxiety states andinsomnia. Although the available literature on the effect of benzodiazepines on psychopathic disorder isnot of a high quality, a single administration of benzodiazepine for a disturbed and aggressive patientmay be helpful during episodes of severe disturbance or when anxiety is overwhelming. Kalnia (1964),for instance, recommends the use of diazepam for patients who have a history of aggression andbehavioural problems.
Psychostimulants are known to reduce feelings of tension and dysphoria in patients with disturbedbehaviour. It has been suggested that stimulants are useful when the psychopathic behaviour exhibitedby a patient can be understood as an adult development of childhood hyperactivity with attention deficit(Faulk, 1994). Indeed, there have been more than 100 controlled trials of stimulant drug effects inoveractive children of normal intelligence, where drugs such as amphetamine and methylphenidate havebeen able to reduce ratings in the children’s behavioural disturbance. (Barkley, 1977; Rapaport, 1983).
According to Dolan and Coid (1993), even if there is not a direct relationship between attention deficitdisorder and psychopathic disorder, it is likely that the two conditions share at least some overlappinggenetic components.
It is now recognised among psychiatrists that anticonvulsant compounds have an important spectrum ofclinical activity in both neuropsychiatric syndromes and behavioural disorder, as well as their effect onepileptic disorders (Gunn and Taylor, 1993). Carbamazepine (CBZ), for instance, which has been in useas an anticonvulsant since the 1960’s, is valuable in the treatment of dyscontrol episodes, such as angryoutbursts, violence and self-mutilation, as well as the psychological problems experienced by epileptics.
It has been suggested that anticonvulsants may be helpful in the treatment of psychopathy because ofevidence that the behavioural dyscontrol exhibited by psychopaths could be linked to a disorder of thelimbic system and that the condition is similar to the postulated syndrome of ‘episodic dyscontrol’(Lishman, 1978). Further encouragement to use anticonvulsants has also emerged fromelectroencephalography (EEG) studies of psychopaths. The incidence of EEG abnormality, for instance,is thought to be highest in patients with personality disorder and behavioural abnormalities, andparticularly aggressive psychopaths, who together with those who have a history of habitual aggressionand explosive rage, show the highest incidence of all. (Williams, 1969).
Physical treatments of psychopathic disorder are based upon the principle that abnormalities of brain
function are a central factor in antisocial conduct. It is frequently suggested, for instance, that for some
specific subgroups of patients, a neurological impairment interacts with other psychosocial factors to
place patients at risk of certain forms of antisocial behaviour. Indeed, White (1964) has argued that the
psychopathic personality is produced by generalised brain injury, which weakens an individuals capacity
for inhibition and control and Gorenstein (1982) has implicated frontal lobe and limbic system damage
in some psychopathic conduct. Views of this kind have supported the use of physical treatments of
psychopathy, such as electroconvulsive therapy (ECT) and psychosurgery. ECT treatment involves
placing electrodes on the patients temples and giving them an 80 to 110 volt shock lasting a fraction of
a second, to produce a generalised convulsion. In cases of severe depression, bilateral ECT is
preferable, because it acts relatively quickly and fewer treatments are needed. In unilateral ECT, an
electrode is applied to the non-dominant side of the hemisphere, with the intention of reducing the
potential side effects of memory disruption. It is not entirely clear whether electroconvulsive therapy is
useful in the treatment of psychopaths, although according to Gunn and Taylor (1993) it may be helpful
in circumstances where a patient has developed a severe depressive illness. Psychosurgery represents the
most dramatic form of physical intervention and is by far the most controversial of the medical
approaches (Gross, 1992). Although the use of lobotomies (the partial separation of other parts of thebrain from prefrontal lobes) enjoyed a brief vogue in the 1940’s, modern psychosurgery has becomemuch more sophisticated, with very small amounts of brain tissue being destroyed in very preciselocations (fractional operations). It has been suggested that for patients who are abnormally aggressive,the neural circuit connecting the amygdala and the hypothalamus should be removed, in the hope thatthis will reduce the subjects aggressive and assultive behaviour. However, surgery of this kind wouldnot usually be considered until all other forms of treatment had failed, or when the patient was sufferingfrom an obvious brain abnormality.
Behaviour therapy, or the use of behaviour modification techniques, is an attempt to apply the results oflearning theory and experimental psychology to the problems of maladaptive behaviour (Lantz andIngram, 1984). Within such a model the patient is regarded as an individual whose antisocial behaviourhas been acquired by learning or improper conditioning. Behaviour is seen, not as the product ofspiritual or mental processes, but as the inevitable result of an interaction between environmental historyand current environmental situations. As a consequence, behaviour therapists usually approachassessment through a functional framework, which places emphasis upon current behaviour-environment relations and which seeks to determine the personal and environmental factors of which theantisocial behaviour is considered a function. All behaviours, with the exception of organic syndromesare considered to be the outcome of these complex interactions and potentially amenable to thescientific process of prediction and control (Crawford, 1984).
The two basic types of learning central to the theoretical conceptions of behaviour therapy are classicaland operant conditioning, both of which work on the principle that learning is the acquisition of afunctional connection between an environmental stimulus and a subject response (Gross, 1992).
Classical conditioning applies only to reflex reactions within the autonomic nervous system. What islearned, therefore, is not a new response, but how to produce an established reflex in response to a newstimulus. The experimental work of the Russian physiologist Ivan Pavlov illustrates the importance ofconditioned responses in basic learning. In his experiments with animals, Pavlov was able todemonstrate how it is possible to replace an autonomic reflex, or unconditioned stimulus (UCS) with aconditioned stimulus (CS), to produce an unconditioned reflex response (UCR). The relevance ofclassical conditioning to behavioural therapy, is that experimentally derived stimuli can be used toweaken or eliminate unwanted and maladaptive behaviours. It also demonstrates that it is possible tolearn to inhibit or suppress an unwanted response when an unconditioned stimulus is removed (Pavlov,1927).
Operant conditioning differs from classical conditioning in that it is concerned with voluntary rather thanreflex behaviour, and to how new behaviours can be learnt by the subject concerned. The notion ofoperant conditioning has its origins in the work of Skinner, who having been influenced by Thorndike’sLaw of Effect, developed a theory based upon the principle that behaviour is able to be shaped andmodified by its consequences. Skinner suggests that there are three main learning principles formodifying behaviour. The first two are positive and negative reinforcement, both of which strengthenbehaviour and make it more probable and the third is punishment, which through the presentation ofaversive stimuli, weaken behaviour, making it less probable (Skinner, 1953). Further learning principleshave been added to these, including avoidance, extinction, time-out, generalisation and discrimination.
In addition to the traditional techniques of operant and classical conditioning, are a range of more recentbehavioural therapies which can also be usefully applied to psychopathic patients.(Lantz and Ingram,1984). One of the most widely known methods is aversion therapy, which is designed to decrease thefrequency of inappropriate behaviour, feelings and fantasies. Aversion therapy can be classified as aclassical conditioning procedure, whereby conditioned anxiety is produced in response to the previouslypleasurable, but undesirable behaviour, or as an operant procedure, through which desirable behaviouris punished. In both instances, an aversive stimulus in the form of an electric shock, a nausea-inducingdrug, or a foul-smelling chemical, is presented contingent on the undesirable behaviour one wishes toeliminate. Covert sensitisation is a variant of aversion therapy, which makes use of unpleasant imageryrather than physically aversive stimuli. This technique involves the patient imagining the problembehaviour and then switching to an extremely unpleasant, often noxious or nauseous scene to
discourage it. Covert sensitisation together with orgasmic reconditioning, are often used with patientswho exhibit problems with deviant sexual arousal.
A token economy is a particular type of behaviour modification in which the main vehicle ofreinforcement is some sort of ‘token’. This can take a variety of forms, including poker chips,cigarettes, sweets, privileges or attendance to social events. The essential requirement is that the tokensare linked to a range of back-up reinforcers and thus come to acquire symbolic value in the same waythat ordinary currency does. Token economies can, in theory, be applied to a range of problems, butthey have been used most frequently to modify the behaviour of groups of people living in institutionalsettings.
A variety of behavioural techniques have also been developed which are based upon a skills deficitapproach to behavioural difficulty (Crawford, 1984). This approach analyses behavioural problems notin terms of behavioural excess, but in terms of behavioural deficit. For example, rather than seeingantisocial behaviour as the consequence of a patient being too aggressive, the therapist would regardsuch conduct as an indication of the patient lacking the verbal skills to deal adequately with authorityand resolving this inadequacy by being physically aggressive. Once a problem of this kind has been re-conceptualised, then new, more appropriate, behavioural repertoires can be constructed. (Schwartz andGoldiamond, 1975). This will involve the patient engaging in some form of skills training, which canthen be applied to situations such as handling potentially aggressive encounters, controlling anger, anddealing with authority figures. Social skills training is probably the best known skills training approach,whereby patients are taught the behavioural components of social interaction, with techniques such asmodelling, role-playing and feedback.
Cognitive techniques involve questioning the patients maladaptive or irrational thoughts, and providingnew cognitions to replace them (Dolan and Coid, 1993). This method of therapy regards the majority ofclinical problems as disorders of thought or feeling and works on the principle that because behaviour isto a large extent controlled by the way we think, it should be possible to change maladaptive behaviourby changing the maladaptive thinking which lies behind it. One of the most well known cognitive-behavioural techniques is therapeutic modelling, which is a direct application of the theory ofobservational learning developed by Bandura (1971). Modelling has been used to reduce anxiety, butalso to teach social skills and anger management, by using the powerful effects of social imitation.
Treatment usually involves arranging for a patient to observe a competent, coping human model ofbehaviour, in the hope that this will be reflected in the patient’s future conduct. One of the most widelyused anger management programmes is based upon procedures developed by Novaco (1975), whobelieved that subjects could gain control over their behaviour through a combination of cognitiverestructuring and relaxation training. This approach aims to identify and modulate cognitive, behaviouraland physiological responses to provocation, through various treatment techniques, includingphysiological monitoring, assertiveness training, reappraisal, cognitive self-control, relaxation trainingand self-instruction. The treatment goal is to regulate each individual’s anger, through the understandingof personal anger patterns, but also the acquisition of skills involving more adaptive alternatives toprovocation. The programme can be used on an individual or group basis.
Individual and group psychotherapy
Psychodynamic psychotherapy has its origins in the work of Sigmund Freud and the principles ofpsychoanalysis. Where as behavioural therapy focused upon externally observable behaviour and onmanipulating deviant conduct towards an agreed norm, dynamic psychotherapy is more concerned withapproaching the patient empathetically and with helping them to identify and understand what ishappening in their inner world, with regard to background, upbringing and personal development. Freudregarded the psychotherapeutic process as one in which those in distress could share and explore theunderlying nature of their troubles and possibly change some of the determinants of these, through theexperience of unrecognised forces in themselves (Brown and Pedder, 1979).
The psychodynamic approach to the management of patients with psychopathic disorder, emphasisesthe importance of personality structure and development, and is based upon the principle that antisocialbehaviour is an expression of an underlying personality disturbance. Chronic antisocial behaviour is heldto reflect distortions in development and most particularly, the patient’s primitive defences againsttrusting relationships. (Blackburn, 1990). According to Vaillant (1975), for example, behaviour of this
kind is representative of an individual’s immature defence against fears of dependency and intimacy,which probably result from early experiences of rejection and abuse. Anna Freud (1976) also argues thatprofound disorders of character are the result of harm inflicted on the ego (the rational, logical part ofus that is governed by the reality principle) in the early course of development. According to Freud,damage of this type impairs the ego’s strength and therefore its capacity to contain and manageprimitive anxieties and impulses.
A crucial part of psychotherapy, therefore, is helping the patient to uncover the relevant mental statesand meanings behind their behaviour, allowing them to understand their feelings and maladaptivedefence mechanisms. The therapeutic relationship plays an essential part in this process, because it is thetherapist who directs the patient in their recall of memories and who will help the patient to understandand reintegrate this material into their present lifestyle. It is the work of the therapist to recognisesimilarities and patterns within the material presented and to share with the patient the meanings ofthese rememberings (Gunn and Taylor, 1993). This working alliance allows the patient to transfer theirfeelings and attitudes, developed in earlier similar experiences, to the therapeutic session. It is thisprocess, which Freud described as transference, that provides insight for each patient and encouragesthem to have greater self awareness, self-control and empathy (Blackburn, 1993).
Group psychotherapy is intended to provide education, encouragement and support for its members, butalso a secure environment in which information can be exchanged and opinions heard. The social natureof the group setting aims to provide each patient with an opportunity to examine their difficulties, in asituation reflecting the family and social networks in which their problems developed. Because severalpeople are taking part, interaction is likely to be varied and complex, allowing the patient to learngreater understanding of himself and others, but also, how best to develop relationships with otherpatients. Multiple transferences can develop, in which a patient transfers feelings not only on to thetherapist, but on to fellow patients and the group as a whole. One of the most common modes of grouppsychotherapy used with personality disordered patients is psychodrama, which can be used to helppatients work through a block in expression or communication, or to explore a key conflict in theirlives. It can be particularly helpful in a hospital setting for those who are inhibited or find verbalexpression difficult. As the ‘director’ the therapist can instruct a patient to step into the protagonist’srole (role reversal), in order to foster identification and improvisation.
Therapeutic community approaches
The therapeutic community (TC) has its origins in the changes that occurred in psychiatric hospitalsafter World War II, which encouraged a move away from an authoritarian doctor-patient model, to amore democratic style of staff-patient interaction (Dolan and Coid, 1993). This approach included themore active participation of patients in their own treatment as well as giving them greater responsibilityfor the day to day running of their hospital community. The general assumption is that the delegation ofresponsibility to residents in a ‘living and learning’ environment will encourage a more open expressionof feelings among patients and a greater understanding and exploration of interpersonal relationships.
Through a relaxing of staff-patient hierarchy and the collaboration of staff and patients in a wide rangeof activities, it is hoped that all interactions and relationships in the community can come underexamination. The aim is that such enquiry will lead to a better understanding of deviant or unhealthyprevious behaviour, which may then result in altered interpersonal behaviour and improved psychosocialfunctioning (Dolan and Coid, 1993). Indeed it is claimed that TCs can benefit psychological adjustment,by reducing anxiety and depression and increasing self-esteem and self-perceived conformity andindependence (Blackburn, 1993).
The atmosphere in therapeutic environments of this type are usually informal and regular communitymeetings are held between residents and staff, in order to enhance cohesion and a sense ofcommunalism. Perhaps the most important aspect of TCs, however, is that membership of thecommunity and engagement in therapy are voluntary. In order for the community to function and socialorder to be maintained, members must feel that they have actively chosen to engage in the regime. Atherapeutic community in the full sense maintains close contact with adjacent and relevant communitiesoutside the therapeutic setting and usually practises an open door policy, with the patients coming andgoing freely and participating in activities according to a balance of personal choice and group pressures(Gunn and Taylor, 1993).
Although this means that secure settings cannot be therapeutic communities in this full sense, TCs canbe provided as a voluntary option for patients within secure environments. In fact Special hospitalsusually claim to offer ‘milieu therapy’, which is often used interchangeably with the concept of thetherapeutic community. According to Blackburn (1993), the milieu therapy offered by secure settingsusually includes a combination of pharmacotherapy, psychotherapy, cognitive therapy, group therapyand behavioural therapy. These elements of therapy are delivered by a wide range of staff from differentprofessional backgrounds, so that different patients can receive different treatment packages, dependingon their needs.
Outlined below are four models of treatment currently in use with psychopathic patients. The modelscome from a variety of settings and, with the exception of physical methods, incorporate all thetreatment modalities described above.
Henderson Hospital was the first British unit to develop a patient-orientated approach to the treatment
of psychopathic disorder. The hospital was set up after World War II, as a social rehabilitation unit
using a group-analytic approach for 100 patients. In 1959 the unit was renamed Henderson Hospital,
after Professor Henderson, who wrote Psychopathic States
(1939), and offered combined
psychotherapy and sociotherapy in a TC milieu. Henderson only accepts voluntary admissions, although
about half the patients have a history of adult convictions and 20% have served a prison sentence. The
hospital caters for 29 adults between the ages of 17 and 45, most of whom suffer from personality
disorder and about 60% of which will meat DSM criteria for antisocial personality disorder (Norton,
At the Henderson, nurturing engagement among the patients is a paramount concern and is facilitatedby the hospital’s internal organisation and operation. For example, selection is made in a group settingby residents and staff together and because residents outnumber staff by 3:1, they have a major say inwho is admitted. All therapy at the Henderson is group based, from the daily community meeting, whichincludes all members of residents and staff, through to the small group psychotherapy (thrice weekly)and to art therapy, psychodrama and the task-centred work groups (cookery, gardening, maintenanceand art work), which take place twice weekly. The daily activities are co-ordinated by the ‘Top Three’residents, who have to have been resident for at least three months in order to be nominated to theirpositions (although no one is a resident at Henderson for more than a year). This includes setting theagenda for, and chairing the day’s community meeting, leading the weekly selection group and decidingwhen to call an emergency meeting. The community is rigidly organised and strictly adhered to.
Residents know that they are expected to be in certain places at certain times, that their absence will benoted and that they will be called to account over this. Missing more than two therapy sessions in oneweek, for example, means that all groups the next day must be attended in full.
The Woodstock ward, Broadmoor Hospital
Woodstock is a purpose-built 25 bed secure ward within Broadmoor special hospital, first occupied by
patients in October 1990. The patients on Woodstock ward are given their own room, with integral
sanitation and there is communal space available for therapeutic and leisure activities, although a large
amount of therapy takes place in the occupations and education department. Of the 25 patients in
residence, the majority carry a 1983 Mental Health Act classification of psychopathic disorder, and will
have been convicted of an violent offence (Brett, 1992). The predominant form of treatment within the
ward is group therapy, which falls into two main classes: unstructured psychotherapy groups (which are
psychodynamic in orientation) and structured groups (which are cognitive-behavioural in orientation).
Each group meets once a week and includes between four and eight patients. The unstructured groups
can be divided into supportive and more confrontational groups, for patients who are highly motivated
and able to tolerate challenges to their defences. The structured groups focus on particular areas of
functioning, including sex education, social skills, assertiveness training and anger control (which
involves the use of Novaco’s approach). Medication is also considered and implemented if appropriate.
A minority of patients are engaged in long-term, weekly, individual psychodynamic psychotherapy with
psychologists and visiting psychotherapists, although the demand for such treatment is greater than can
currently be met. As far as possible, treatment is seen as a partnership in which the patient can be active.
Patients are given the opportunity to influence their environment and aspects of the ward regime at
weekly, fairly formal meetings with staff, although it is not always easy to grant patient requests within amaximum security setting.
Dr Henri van der Hoeven Clinic, The Netherlands
The van der Hoeven Clinic is a 75 bed residential facility, which provides community based treatment
for patients who have been committed by penal courts, exclusively because of severe crimes (including
physical abuse, rape, murder, and homicide) and because their mental disorder was considered to bear
serious risk of future offence. Over 80% of the hospital’s admission are between 20 and 35 years and a
high proportion of these will be psychopathic (Feldbrugge, 1992). The average length of stay is about
four years. The purpose of the unit is to provide rehabilitation, which in practice, involves a tight
connection between treatment and security. The hospital doors and windows are solid enough to
prevent impulsive escapes, but at the same time, the clinic has neither guards nor permanent supervision
of patients and some are granted freedom of movement outside the hospital. Security is considered to be
a matter of collaborative effort, in everybody’s interest. Treatment in the unit is based on the TC model,
in which the patient group accepts responsibility for decision making and the living tasks are shared
between staff and residents. Guidelines include, not to do for patients, what they are capable of doing
for themselves. Each patient is intensely involved in their own treatment planning and on a more limited
scale, that of their group members. Each resident evaluates their treatment progress with a patient
group each month. The most common form of treatment is group psychotherapy, in combination with
educational rehabilitation and resocialisation programmes. It is hospital procedure that patients also
participate in seclusions, whether these proceed quietly or require force.
HMP Grendon Underwood
Grendon is a maximum security prison, which was opened in 1962 and offers psychiatric treatment to
recidivist offenders, with moderate to severe personality disorder (a high number of which will have
incurred convictions of violence). The prison has 200 beds and referral is made after conviction by the
prison medical service, with the final selection being made by Grendon staff. Patients are selected on the
grounds of their intelligence, articulateness, willingness to accept the Grendon regime and evidence of
some personal achievement. All inmates are voluntary and free to return to an ordinary location on
request. Men are received into an assessment unit, where they are given an induction to the regime and
the alternative ways of relating to staff and other inmates. Those unsuitable for treatment can be filtered
out at this point. Following assessment, the inmates are randomly allocated to the four treatment wings,
each of which is run as an individual TC, where patients are encouraged to participate in the
organisation of their own activities and the general running of the institution. The essence of the system
is to help patients to mature by giving them a high degree of responsibility, in an atmosphere less
authoritarian than ordinary prisons (Gunn et al, 1978). Treatment takes place in small groups, which
meet twice weekly, and in larger community meetings of 30 or 40 people living in the same wing. Most
groups use a mixture of psychotherapy or group counselling, in which patients can examine themselves
and work through personal relationships. The unit avoids the use of medication, except in exceptional
Although numerous methods of treatment have been tried with psychopathic patients, there are a limitednumber of controlled outcome studies in this area, which has made it difficult to determine which are themost effective. What little research is available, however, indicates that the nature of the psychopathiccondition has made it one of the most difficult mental disorders to treat, with more and morepsychiatrists and psychologists becoming increasingly pessimistic about their ability to deal with thisgroup.
This chapter outlines the current status of outcome research into the treatment of psychopathic andantisocial personality disorder. The effects of each method of treatment will be considered in turn, usingevidence derived from a number of different clinical settings.
The effect of pharmacological treatments
Although a number of drug studies have been conducted over the past 30 years which have monitored
the effects of certain forms of medication on the mentally disordered, few of these have been carried out
with patients who display the core features of psychopathy, as defined in the ICD-10, DSM-IV, or inHare’s Psychopathy Checklist. In fact, the only trials that have specifically addressed the treatment ofpatients whose characteristics resemble these core clinical features, are early studies involvingpsychostimulants and a small number of trials involving the use of lithium.
There are two uncontrolled studies that were carried out in the 1940’s, both of which report the positiveeffects of amphetamine in psychopathic patients. The first study was carried out by Hill (1944), whodescribes administering amphetamines to a large series of psychopaths in clinical practice. Hill was ableto observe his subjects over a number of years and discovered that those who responded positively toamphetamines were patients whose behaviour was characterised by an aggressive, bad tempered andgenerally hostile tendency to interpersonal relationships. Response was most satisfactory in patientswhose sleep was not affected by the drug and those who were able to make warm interpersonalrelationships, even if these were quickly wrecked by their impulsivity and irritability. Non-responsivepatients included paranoid and schizoid personalities and passive and hysterical personalities, for whomamphetamine would usually increase irritability, anxiety and insomnia (Hill, 1944).
The second study was conducted by Shorvon (1947), who describes an uncontrolled trial with aninadequate male psychopath and one aggressive male and one aggressive female psychopath. All threesubjects responded positively to 20 to 40 mg of benzedrine, exhibiting a significant reduction in moodswings, rage attacks and irritablilty. Bed-wetting ceased in the inadequate male and the female, who wasunable to control her sexual impulses, self-reported a reduction in sexual drive. Like Hill, Shorvon alsonoted that sleep was rarely affected in those who responded positively to treatment.
There have also been reports of the positive effects of lithium with patients whose characteristicsresemble the core elements of psychopathy. In an open, multiple cross-over study conducted by Sheard(1971), for instance, which involved 12 male delinquents, characterised by repeated impulsiveaggressive behaviour, aggressive episodes were found to decrease when sufficient lithium wasprescribed for a high serum level. In a second study, Sheard, Marini and Bridges (1976) produced thesame results with a sample of 66 young delinquent inmates, held in a correctional institution for violentcrimes. The main criteria for selection were convictions for serious aggressive offences, includingmanslaughter, murder, rape and a history of chronic assultive behaviour or chronic impulsive antisocialconduct. After a one month drug-free period, subjects were randomly allocated to either lithiumcarbonate or a placebo for the following three months. The patients’ antisocial behaviour was monitoredby the number of infractions of institutional rules they committed. These were devided into majorinfractions, which involved threats or actual assaults and minor infractions, which consisted of lessserious, non-violent offences. The researchers found that there was a significant reduction of majorinfractions among the active drug group.
Similar results were produced in a study conducted by Rifkin, Quilkin and Carrillo (1972), whoexamined the effects of lithium on a group of 21 adolescents. The study involved administering lithiumfor six weeks in a double-blind cross-over trial. Although the subjects were described as having anemotionally unstable character disorder, many of the characteristics of this condition include behaviourssimilar to the core features of psychopathy, such as chronic maladaptive behaviour patterns, pooracceptance of authority, poor work record and a tendency to manipulate. Of the 21 patients, it wasjudged that 14 were better on lithium, four on the placebo and that three showed no improvement.
The impact of comorbidity on pharmacological treatments
It has been suggested that if clinicians accept the classification of psychopathic disorder set out in thethree most commonly used clinical categorisations, then it is not suprising that pharmacological methodswith psychopathic patients have received so little attention, relative to other methods. According to thecurrent editions of the DSM, ICD and Hare’s Psychopathy Checklist, psychopathic disorder ischaracterised by a gross disparity between behaviour and the prevailing social norms (World HealthOrganisation, 1992) and is a condition which develops over a very long period of time. This wouldimply that treatments that focus upon inner change and the renewal of interpersonal skills and relationswould hold out more hope for the psychopath than a treatment modality whose effects are rapid andpurely chemical (Dolan and Coid, 1993).
If clinicians accept the findings produced by Coid (1992) and Walker and McCabe (1973), however,which demonstrate that psychopathy has a high comorbidity with other clinical conditions, then it
becomes apparent that those diagnosed with the disorder may in fact be suffering from additionalsymptoms which are responsive to drug treatment.
Research suggests, for example, that low-dose neuroleptic therapy can be beneficial for patientsexhibiting schizotypal features, including conceptual disorganisation, illusions, paranoid ideation and ahistory of short-lasting psychotic episodes. In an uncontrolled trial conducted by Brinkley et al (1979),for instance, which involved five patients with borderline personality disorder (BPD), low dosageneuroleptics were able to produce a reduction in regressive psychotic-like symptoms and paranoia.
Similar results were obtained in a double-blind study conducted by Soloff et al (1986), which involved62 in-patients, of which 43% had BPD, 6% had schizotypal personality disorder and 51% had acombination of both. The study looked to compare the effects of haloperidol with a placebo andamitriptyline. The findings indicated that haloperidol was superior to amitriptyline in the reduction ofschizotypal symptoms, behavioural dyscontrol, hostility, paranoia and interpersonal sensitivity, althoughthere were no significant differences between amitriptyline and the placebo.
Benzodiazepines have also been found effective in subjects suffering from schizophrenia and schizoidpersonality disorder. In a study conducted by Kalnia (1964), for example, diazepam produced areduction in the behavioural problems among a group of 52 male prisoners with diagnoses ofschizophrenia and schizoid personality disorder. The drug was associated with improvements in theviolent, destructive and belligerent behaviour of 63% of the group. Similarly, in a double-blind trialconducted by Lion (1979), which involved the random allocation of 65 patients to oxazepam,chlordiazepoxide and a placebo, it was concluded that anti-anxiety drugs played a significant role in themanagement of explosive personalities and the reduction of paranoia and mood lability.
However, it is of some concern, with respect to the treatment of psychopathic patients, thatbenzodiazepines can produce unwanted disinhibitory effects in some patients. Indeed, Gardner andCowdry (1985), who have conducted the most comprehensive evaluation of the unwanted side effectsof patients who have been given alprazolam, found that out of the 12 subjects given the drug, sevenresponded with episodes of serious dyscontrol. In fact, due to the severity of these episodes in somesubjects, including drug overdoses and severe self-mutilation, it was necessary to terminate four of thetrials before the study had been completed.
Although there are numerous studies that point to the positive effect of tricyclic antidepressants andserotonergic reuptake inhibitors with patients suffering from severe depression, including the studyconducted by Fava, Rosenblaum and Pava (1993), which demonstrated the effectiveness of fluxetine onmajor depression, studies involving patients with personality disorder (usually BPD), do notdemonstrate such a dramatic response. For instance, Black, Bell and Hulbert (1988), found that in anexperiment comparing 75 subjects with major depression and coexisting personality disorder, with 152subjects with pure major depression, a good response to tricyclic treatment was produced in 64% of thesubjects with pure depression compared to only 27% of those with an additional personality disorder.
Charney et al (1981), in a similar retrospective case-note study, involving 160 patients with majordepressive disorder, also found that for the subjects on medication, 76% of those who had puredepression, responded to tricyclic antidepressants, compared to only 36% of those who had anadditional personality disorder. There is also some concern that antidepressants of this type can producea disturbing clinical worsening among some patients with personality disorder. For example, in theirinvestigation into the effect of amitriptyline and haloperidol in patients with BPD, Soloff, Anselum andNathan (1986) found that some of the patients appeared progressively more hostile, and impulsive afterbeing administered with the drug. These symptoms of demanding and assultive behaviour were differentfrom the patients’ initial complaints and worsened with longer duration and higher doses of medication.
It has been noted, however, that trials involving the use of monoamine oxidase inhibitors withpersonality disordered patients have produced more positive results. In a trial with 16 female patientswith borderline personality disorder, for instance, Cowdry and Gardner (1988) found thattranylcypromine improved anxiety, depression and sensitivity to rejection in the nine who completed thetrial. Recently, Soloff et al (1993) also found that phenelzine was useful in the reduction of hostility andanger in patients with borderline personality disorder. Findings of this kind suggest that for thosepsychopathic patients who exhibit symptoms of severe depression, MAOIs may be the treatment ofchoice.
Outcome research involving the use of pharmacological treatments suggests that drug administrationcould play a role in the temporary control of violence in patients with psychopathic disorder, but also inthe amelioration of other psychiatric symptoms which can be exhibited by this group. It is interesting,however that there is currently little advocacy of the use of drug treatment with patients diagnosed withpsychopathic disorder. According to Dell and Robertson (1988), for example, at the time their studywas conducted, only 14% of the legal psychopaths at Broadmoor Hospital had been prescribed withmedication and in response to a questionnaire administered by Tennent et al (1993) to all members ofthe forensic section of the Royal College of Psychiatrists, it was generally agreed that drug therapy wasthe least useful form of treatment for psychopathic patients. It is possible that psychiatrists are unwillingto use medication with psychopathic patients, and particularly tranquillisers, because of the ethical issuesit has raised. It has been argued, for instance, that the use of this kind of ‘chemical straight jacket’neglects the environmental causes of violence and that drugs should not be administered simply with theaim of controlling difficult behaviour. Clinicians are also aware that drugs such as lithium can produceunpleasant side effects in patients, while other forms of medication can become addictive. Particularconcern has been expressed, for example, about the number of patients who become dependant onbenzodiazepines, when they are prescribed over a long period.
The response to physical treatments
There are very few controlled trials which have demonstrated the effect of electroconvulsive therapy
(ECT) on patients with psychopathic disorder and the few experiments that are available indicate that it
is largely unhelpful in the treatment of the core antisocial elements of the condition. In an early study
conducted by Green, Silverman and Geil (1944), for example, which involved administering petit mal
electro-shock therapy to 24 psychopathic prisoners on an average of 11 occasions, the majority of
subjects produced little or no response to treatment of this kind. Although immediately after the
experiment, patients were described as sleeping better and less nervous, at six-month follow-up, only
four patients were considered to have improved, while the rest were unchanged.
According to McCord (1982), there is much more conclusive evidence for the effective use ofelectroconvulsive therapy in the treatment of depressed patients. Indeed, in a review of the literature onECT conducted by Fink (1978) it was discovered that for psychotic-depressive and manic patients,success rates with ECT ranged from 60 to 90% and that suicide was less frequent in ECT treatedpatients than among those who only received psychotherapy. It is possible, therefore, thatelectroconvulsive therapy could be useful for psychopathic patients who have developed severedepressive illness, although this still remains to be seen.
There are also very few controlled trials demonstrating the effective use of psychosurgery withpsychopathic patients, despite the fact that it is frequently claimed that this form of treatment canreduce aggressive and assultive behaviour. Darling and Sandall (1952), for instance, indicated thatsurgical trauma to the prefrontal lobes decreased the aggressive behaviour of 17 out of 18 ‘antisocial’inmates from a mental hospital, although no standard for improvement was given and Robin (1958), in acontrolled follow-up study, found no evidence that leucotomy benefited psychopaths. In an experimentconducted by MacKay (1948), 20 psychopathic patients at Rampton Hospital, who exhibited violentbehaviour and emotional tension, underwent leucotomy. At six months follow-up 35% were describedas markedly improved, 35% as improved, 25% showed little or no change and one patient had died. Thestudy was not controlled, however, and as with the study conducted by Darling and Sandall, nostandard of improvement was provided.
The lack of conclusive evidence for the effective use of psychosurgery with psychopathic patients,together with the high mortality rates associated with this kind of treatment and the ethical dilemma ofpatients undergoing such operations involuntarily, has meant that this technique has been largelyabandoned by contemporary psychiatrists. However, there is still some discussion about the use ofpsychosurgery for patients whose psychopathy is clearly related to brain damage. Indeed, Andy (1975)has produced evidence that psychosurgery was successful with six psychopathic patients who all hadcongenital or acquired brain abnormality, through seizures or trauma.
The effect of behavioural and cognitive therapy
Although few studies have monitored the long-term effects of cognitive and behavioural treatments,there is evidence that an increasing number of mental health institutions are employing this type ofapproach with personality disordered patients. For instance, Dell and Robertson (1988) discovered that
of the 106 legal psychopaths detained in Broadmoor hospital for an average of eight years, 22% hadattended a social skills group, 6% had been to relaxation therapy, 4% had been to sex behaviourmodification programmes and 6% had attended anger control sessions.
Although the research available does not allow us to monitor the success of the cognitive-behaviouralmethods used at Broadmoor, there are a number of studies available that have evaluated the short-termeffects of these methods, when they are employed as the sole or primary means of therapy. Most ofthese studies have had encouraging results with cognitive and behavioural treatments and advocate theiruse with aggressive and antisocial patients. Jones et al (1977) for example, describe the success of ashort term token economy ward for military personal diagnosed with personality disorders and foundthat a combination of individualised contingency contracting and reinforcement with points for goodappearance, work and educational achievement resulted in significantly more of those treated remainingon active duty, than untreated controls. Similarly, Moyes Tennent and Bedford (1985) found that aprogramme combining individualised contingency management, a token economy and social skillstraining, reduced the aggressive and disruptive behaviour of a group of 78 male and female adolescentswith behaviour and character disorders (including aggressiveness, self mutilation, theft, absconding anddisruptive behaviour). The study used a comparison group, which consisted of 63 adolescents who wereaccepted for treatment but not then admitted. At two year follow-up, the treatment group showed lessphysical aggression, a reduction in self mutilation and temper outbursts and significantly more of thetreatment group were found to be living independently outside institutions.
Colman and Baker (1969) have also reported on the success of an operant-conditioning model withsoldiers diagnosed with behavioural problems (including homicidal behaviour, psychotic-like states andantisocial threats and gestures). Subjects were randomly assigned to the operant-conditioning ward, orto traditional hospital treatment. The average stay on the treatment ward was 16 weeks, during whichtime education and social skills groups were held and work tasks carried out. Although participation inwork tasks and groups was voluntary, subjects were rewarded for attendance, with points which couldbe turned into privileges. Out of 48 subjects, 46 remained in the study and were able to be followed-upfor three months or more after discharge. 70% of these were functioning in their unit, compared to only28% of the comparison group.
In a comprehensive experiment conducted by Crawford (1981), who compared the effects of socialskills training on a group of violent subjects, with those having verbal psychotherapy and a group ofwaiting list controls, social skills training proved more effective than both control conditions on a rangeof self-report and behavioural measures. Crawford’s study is one of the few in this area to providefollow-up of the maintenance of treatment effects, and interestingly, it was found that only threemeasures differed significantly at follow-up, all of which were in the direction of improvement.
There are also several reports of the successful use of cognitive-behavioural anger control treatmentwith aggressive patients. In a study conducted by Stermac (1986), for example, it was discovered thatfollowing treatment, anger control subjects reported significantly lower levels of anger and increasedthresholds for provocation tolerance, than control subjects. To qualify for the study, subjects wererequired to have either a history of self-reported or clinically assessed anger control difficulties, or ahistory of aggressive behaviour. The control group were placed in twice-weekly one-hourpsychoeducational group sessions and the anger control group were placed in one-hour twice weeklysessions based upon the cognitive behavioural and stress inoculation principles advocated by Novaco.
The results of the study indicate that treatment was effective both in reducing self-reported anger levelsand in facilitating the use of more adaptive strategies for coping with stress.
One of the problems associated with cognitive and behavioural methods of treatment, is that in line withtheir underlying philosophy, most programmes only target specific behavioural deficits, such as socialskills and problems with anger, and very rarely address the treatment of psychological disorders in theirentirety. There is also a lack of agreement among behaviourists about what constitutes an improvementin certain skills and very few of the studies in this area have provided a behavioural baseline for theevaluation of performance. It is also concerning that because of the degree of organisation andmonitoring required by some cognitive-behavioural methods and most particularly the token economy,many have failed to survive in the long term. Perhaps the biggest problem with cognitive andbehavioural methods, with regard to psychopathic patients, is the question of whether it is possible forsubjects to transfer their behavioural training to conditions of real life. Howells (1986) has discussed this
problem in some detail, arguing that offender patients frequently receive treatment in institutions whosephysical and interpersonal characteristics are entirely different from their natural environment and yetare expected to generalise their stimulus training to non-institutional settings. He adds that stimulusgeneralisation of this kind will be significantly reduced whenever the patient can discriminate betweenconditioning in which reinforcement is and is not delivered. For instance, an individual could register adifference between a confrontational situation with a member of a social skills training group and with aperson in a real-life post-treatment setting. Unrealistically high standards of performance may causeconfusion in the patient and evoke very different behaviour from that exhibited in the treatment session.
The response to individual and group psychotherapy
As with cognitive and behavioural methods, there have been very few evaluations of the effectiveness ofpsychotherapy with patients diagnosed with psychopathic disorder, even though psychodynamictherapy, and particularly group treatments, are often employed in mental health settings. Indeed,compared to the 41% of legally defined psychopaths in Broadmoor hospital who had receivedbehavioural therapy, Dell and Robertson (1988) found that 71% of this group had been involved ingroup psychotherapy and 43% in individual psychotherapy. As Snowden (1995) points out, this is inspite of the fact that there are only a handful of psychotherapists working in the forensic psychiatryservices.
Most psychotherapists have found that keeping psychopathic patients in out-patient psychotherapy isvery difficult, unless clients are on probation, or under a court order of treatment. For instance, Carney(1977) reports the moderate success of an out-patient group programme with aggressive personalitydisordered male offenders, who attended as a condition of probation. After an average of 13 monthstreatment, significant improvements were found in ratings of community adjustment and the recidivismrate was a relatively low 28%. However, no changes were found on psychological tests administered tothe group, such as the MMPI. Carney suggested that while therapy did not change personality, it did atleast achieve control over violent behaviour. Woody et al (1985) found that among out-patient drugabusers undergoing psychotherapy, antisocial personality disordered patients showed little change on avariety of psychiatric and psychological measures, in comparison to antisocial personality disorderedpatients who were also depressed. The authors conclude that although counselling may reduce drug use,it is not beneficial to employ psychotherapy to treat opiate-dependent patients who have antisocialpersonality disorder alone. It is worth noting, however, that on average each patient only received 11psychotherapy sessions, whereas most clinicians would recommend a much longer course of treatment.
Apart form a study carried out by Persons (1965) which monitors the effect of individual eclecticpsychotherapy on sociopathic personalities and one or two studies that involve individual therapy as abackup to group therapy, there are no controlled experiments which evaluate the impact of individualpsychotherapy on patients with psychopathic disorder. Persons’s study involved randomly assigning 12male offenders with a diagnosis of sociopathic personality to 20 sessions of individual eclecticpsychotherapy over a ten week period. Subjects were administered with self-report tests of psychopathyand anxiety before and after treatment and these were compared with the results of 40 untreatedcontrols. Initially the scores from the two groups did not differ, but a significant effect of therapy wasshown on all outcome variables after treatment.
The lack of evidence for the positive effect of individual and out-patient psychotherapy withpsychopathic patients has lead most psychiatrists to consider them inappropriate for antisocialpersonalities and to regard group therapy as a preferable option. Indeed, far more outcome studies havebeen conducted using group methods and a greater number of these have had a positive effect on theirsubjects. In one of the largest outcome studies concerning psychotherapy with adults, for instance, Jew,Clanon and Mattocks (1972) found that imprisoned personality disordered offenders who had receivedgroup therapy had significantly better success on parole than untreated offenders. The study involvedgiving 257 male subjects psychoanalytically oriented group therapy over a minimum of one year, foreight hours a week. These men were matched on criminological and demographic factors with 257 menalso in the prison, but who had not received therapy. During the first year of parole, the rate of parolerevocation for the treated offenders was 24%, compared to a rate of 40% for the untreated group.
However, at four year follow-up, the difference in the number of returns to prison had disappeared.
Maas (1966) had an equally successful outcome with a group of 46 sociopathic female prison inmates.
Women were randomly divided into two groups, one of which had a three month course of twice-weekly group therapy, which combined action procedures such as psychodrama with more conventional
group psychotherapy. At the end of therapy the treatment group showed significantly greaterimprovement on the Block Ego-Identity index.
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Curriculum Vitae: DARRYL I. MACKENZIE B.Sc. (Statistics), University of Otago, New Zealand, 1995D.Ap.Stat., University of Otago, New Zealand, 1998Ph.D. (Statistics), University of Otago, New Zealand, 2002PROFESSIONAL BACKGROUNDSince 1997 I have been applying statistical techniques to address questions of interest for a wide range of animal species including seabirds, grizzly bears, sea lio