Assessing illness- and non-illness-based motivations for violence in persons with major mental illness

Law and Human Behavior
Stephanie R PenneyAlexander I Simpson

Abstract

Research on violence perpetrated by individuals with major mental illness (MMI) typically focuses on the presence of specific psychotic symptoms near the time of the violent act. This approach does not distinguish whether symptoms actually motivate the violence or were merely present at the material time. It also does not consider the possibility that non-illness-related factors (e.g., anger, substance use), or multiple motivations, may have been operative in driving violence. The failure to make these distinctions clouds our ability to understand the origins of violence in people with MMI, to accurately assess risk and criminal responsibility, and to appropriately target interventions to reduce and manage risk. This study describes the development of a new coding instrument designed to assess motivations for violence and offending among individuals with MMI, and reports on the scheme's interrater reliability. Using 72 psychiatric reports which had been submitted to the court to assist in determining criminal responsibility, we found that independent raters were able to assess different motivational influences for violence with a satisfactory degree of consistency. More than three-quarters (79.2%) of the sample were judged to h...Continue Reading

Citations

Nov 20, 2016·Behavioral Sciences & the Law·Ronald Schouten, Douglas V Brennan
Sep 19, 2019·Journal of Interpersonal Violence·Stephanie R PenneyAlexander I F Simpson
Jun 10, 2021·Psychiatry, Psychology, and Law : an Interdisciplinary Journal of the Australian and New Zealand Association of Psychiatry, Psychology and Law·Nathaniel Lehlohonolo MosothoHelene Engela le Roux

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