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The Perpetration of Lethal Violence amongst Psychopathy Subtypes
Mid Sweden University, Faculty of Human Sciences, Department of Social Sciences.
2013 (English)Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

Despite the fact that lethal violence is regarded as the most severe form of antisocial behaviour, it remains one of the least studied criminal acts. Since there is a known relationship between lethal violence and psychopathy, the overall aim of the current study was to increase the understanding of the relationship between psychopathy and lethal violence, while the specific aim was to examine and account for the relationship between different subtypes of psychopathy and the perpetration of lethal violence. The sample consisted of 138 offenders from both correctional and forensic settings. Psychopathy subtypes were identified by the use of a hierarchical agglomerative cluster analysis, Ward's method, and scores on the two parts of the PCL:SV were used as cluster variables. The incremental change in the agglomeration coefficient and a scree plot suggested a four-cluster solution to be most appropriate. The clusters were compared on three external variables as well as on the perpetration of lethal violence. The results identified four different psychopathy subtypes; Overall High Psychopaths (high scores on both parts), Primary-Trait Psychopaths (higher scores on part 1), Average Score Psychopaths (average scores on both parts) and Secondary-Trait Psychopaths (higher scores on part 2). The Primary-Trait Psychopaths committed significantly more lethal violence than the Secondary-Trait Psychopaths and the lethal violence by this subtype was mostly instrumental. Findings suggested that two of the identified subtypes resembled primary and secondary psychopaths described in literature and that the perpetration of lethal violence is related to the affective and interpersonal deficits that are characteristic of primary psychopathy. Implications for risk assessment and management as well as future research were discussed.

Key words; Psychopathy, lethal violence, subtypes, primary, secondary, PCL:SV.

Place, publisher, year, edition, pages
2013. , 47 p.
Keyword [en]
Psychopathy, lethal violence, subtypes, primary, secondary, PCL:SV
National Category
Social Sciences
Identifiers
URN: urn:nbn:se:miun:diva-20295Local ID: KR-V13-A1-007OAI: oai:DiVA.org:miun-20295DiVA: diva2:666534
Subject / course
Criminology KR1
Supervisors
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Note

2013-06-11

Available from: 2013-11-22 Created: 2013-11-22 Last updated: 2013-11-22Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
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