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Psychiatry Res. 2018 Feb;260:371-378. doi: 10.1016/j.psychres.2017.12.006. Epub 2017 Dec 6.

Distinct pathological profiles of inmates showcasing cluster B personality traits, mental disorders and substance use regarding violent behaviors.

Author information

1
Centre de recherche de l'Institut Universitaire en Santé Mentale de Montréal, Montreal, Canada; Department of Psychiatry, Faculty of Medicine, Université de Montréal, Montreal, Canada.
2
Centre de recherche de l'Institut Universitaire en Santé Mentale de Montréal, Montreal, Canada; Department of Psychiatry, Faculty of Medicine, Université de Montréal, Montreal, Canada; School of Criminology, Faculty of Arts and Science, Université de Montréal, Montreal, Canada.
3
Centre de recherche de l'Institut Philippe-Pinel de Montréal, Montreal, Canada.
4
Department of Psychology, Université du Québec, Trois-Rivières, Canada; Centre de recherche de l'Institut Philippe-Pinel de Montréal, Montreal, Canada.
5
Centre de recherche de l'Institut Universitaire en Santé Mentale de Montréal, Montreal, Canada; Department of Psychiatry, Faculty of Medicine, Université de Montréal, Montreal, Canada; Centre de recherche de l'Institut Philippe-Pinel de Montréal, Montreal, Canada. Electronic address: alexandre.dumais@umontreal.ca.

Abstract

High rates of violence are found amid offenders with severe mental illnesses (SMI), substance use disorders (SUDs) and Cluster B personality disorders. Elevated rates of comorbidity lead to inconsistencies when it comes to this relationship. Furthermore, overlapping Cluster B personality traits have been associated with violence. Using multiple correspondence analysis and cluster analysis, this study was designed to differentiate profiles of 728 male inmates from penitentiary and psychiatric settings marked by personality traits, SMI and SUDs following different violent patterns. Six significantly differing clusters emerged. Cluster 1, "Sensation seekers", presented recklessness with SUDs and low prevalence's of SMI and auto-aggression. Two clusters committed more sexual offenses. While Cluster 2, "Opportunistic-sexual offenders", had more antisocial lifestyles and SUDs, Cluster 6, "Emotional-sexual offenders", displayed more emotional disturbances with SMI and violence. Clusters 3 and 4, representing "Life-course-persistent offenders", shared early signs of persistent antisocial conduct and severe violence. Cluster 3, "Early-onset violent delinquents", emerged as more severely antisocial with SUDs. Cluster 4, "Early-onset unstable-mentally ill delinquents", were more emotionally driven, with SMI and auto-aggression. Cluster 5, "Late-start offenders", was less severely violent, and emotionally driven with antisocial behavior beginning later. This study suggests the presence of specific psychopathological organizations in violent inmates.

KEYWORDS:

Cluster B personality traits; Clustering; Severe mental illnesses; Substance use disorders; Suicide; Violence

PMID:
29247923
DOI:
10.1016/j.psychres.2017.12.006
[Indexed for MEDLINE]

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