Homicidal aggession in schizophrenic men

Planansky, Karel; Johnston, Roy

doi:10.1111/j.1600-0447.1977.tb00141.x

Cited by 74 publications

(30 citation statements)

References 6 publications

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“…The non-planned, explosive violence observed with catatonic excitement or psychotic agitation is self-evidently far more impulsive than premeditated (Planansky & Johnston, 1977). Studies of aggressive behavior among schizophrenic subjects generally record whether the acts were related to delusions, hallucinations, or psychotic disorganization, but do not comment on whether the acts were also impulsive, compulsive, or premeditated.…”

Section: Discussionmentioning

confidence: 98%

“…Disorders with prominent delusions, such as Schizophrenia, Paranoid Type (Planansky & Johnston, 1977;Tardiff & Sweillam, 1982) have a stronger association with violence than disorders that are not so marked by delusions. Taylor and colleagues (1994), however, point out that such studies do not always take into account the diagnostic distribution of the study population.…”

Section: Delusionsmentioning

confidence: 96%

“…Among 205 hospitalized patients with schizophrenia, Planansky and Johnston (1977) identified and studied 59 men who threatened to kill or physically assaulted another person. Most frequently such aggression occurred during the first acute episode (n ¼ 42), but less commonly it occurred with exacerbations of their mental illness.…”

Section: Hospitalized Patients Who Assaulted Prior To Admissionmentioning

confidence: 99%

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Schizophrenia and impulsive aggression: A heuristic inquiry with forensic and clinical implications

Felthous

2008

Behavioral Sci & The Law

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Assessment of a violent act committed by an offender with schizophrenia typically focuses on whether the act was due to distortions in thought or perception, i.e., delusions or hallucination. An important but less appreciated feature is the impulsivity of the act, which can have forensic and therapeutic implications. Here a modification of Barratt's classification of aggressive behavior is presented that includes premeditated (instrumental), medical (secondary), impulsive (expressive), and compulsive (instrumental and expressive) aggression. Violence due to a mental condition such as schizophrenia is considered medical, but even aggression motivated by delusions or hallucinations can also be characterized as impulsive, premeditated, or compulsive.Although research on aggression and schizophrenia is limited with regard to the impulsivity-premeditation dimension and difficult to compare, current evidence suggests this to be an important consideration in the assessment of aggression in individuals with schizophrenia, important both forensically and therapeutically. Future research on the impulsive-premeditated quality of aggressive acts by offenders with schizophrenia--research wherein aggressive behavior is defined, situational context is clarified, and diagnostic criteria are explicitly followed--should further refine our understanding of the nature of aggressive acts associated with schizophrenia. Findings from such research will undoubtedly inform assessment, treatment, and forensic relevance of schizophrenia-related physical aggression.

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Section: Discussionmentioning

confidence: 98%

Section: Delusionsmentioning

confidence: 96%

Section: Hospitalized Patients Who Assaulted Prior To Admissionmentioning

confidence: 99%

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Schizophrenia and impulsive aggression: A heuristic inquiry with forensic and clinical implications

Felthous

2008

Behavioral Sci & The Law

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“…Others have suggested that aggression is not predicted by sex, psychiatric diagnosis or positive psychotic features, but by younger age, fewer years of illness and contemporaneous alcoholism and substance abuse (Kay et al, 1988). For some time command hallucinations were regarded as particularly significant (Planasky and Johnston, 1977;Yesavage 1983). Subsequently, it has been suggested that the presence of any psychotic symptom increases the risk, not just command hallucinations (Hellerstein et al, 1987).…”

Section: Introductionmentioning

confidence: 97%

Psychosis and offending in British Columbia: characteristics of a secure hospital population

Hodelet

2001

Criminal Behav Ment Health

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INTRODUCTION: There is an increased likelihood of violence in the mentally ill although the risk is small. AIMS: The study aimed to ascertain the features in a secure hospital population that linked offending and mental illness. METHOD: A survey of patients in the high security hospital serving the province of British Columbia in Canada was carried out. Information on 175 mentally disordered offenders was extracted and included demographic data and specific characteristics of their offences, diagnoses and psychotic symptoms. RESULTS: The most prevalent offences were crimes of violence, but 39% of patients were not primarily violent offenders. Almost two-thirds (61%) had two or more diagnoses. A large majority of the patients were psychotic, schizophrenia being the most common diagnosis. There was a highly significant association between psychosis and violence, but the strength of the association was not increased by the presence of imperative hallucinations or delusions. The sample comprised various ethnic groups, one of which, Native Americans, was over-represented. However, no association was found between violent offending and ethnicity, or age or years of illness. DISCUSSION: The study replicates previous findings of the link between violent offending and psychosis, but not a specific link between violent offending and psychotic drive. A surprising finding was a lack of association between violent offences and substance misuse.

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“…Examination of schizophrenic patients who had committed violent crimes revealed that a very large majority of them had been psychotic at the time of the offence (Planansky & Johnston, 1977;Taylor, 1985). However, Virkkunen (1974) reported that only about one third of violent offences by schizophrenics are committed during a psychotic episode.…”

Section: Violent Behaviour In the Context Of Schizophrenic Symptomatomentioning

confidence: 99%

Schizophrenia and violence

Volavka¹,

Krakowski²

1989

Psychol. Med.

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Homicidal aggession in schizophrenic men

Cited by 74 publications

References 6 publications

Schizophrenia and impulsive aggression: A heuristic inquiry with forensic and clinical implications

Schizophrenia and impulsive aggression: A heuristic inquiry with forensic and clinical implications

Psychosis and offending in British Columbia: characteristics of a secure hospital population

Schizophrenia and violence

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