A Comparison of Domestic and Non-Domestic Homicides: Further Evidence for Distinct Dynamics and Heterogeneity of Domestic Homicide Perpetrators

To facilitate a deeper understanding of domestic homicide (DH), the correctional files of 37 male DH perpetrators were examined. Victim, perpetrator and offense characteristics were compared against those from 78 non-domestic homicide perpetrator files to elucidate distinct dynamics. Risk factors preceding DHs were identified retrospectively using the revised Danger Assessment (DA; Campbell et al. 2009), and the role of psychopathy was explored via the Psychopathy Checklist-Revised (Hare 2003). DHs exhibited distinctive dynamics, especially in terms of perpetrators' predominant drives to inflict harm out of proprietary revenge. Most DHs did not occur "out of the blue", as 82.9 % of cases showed elements of planning; and 86.5 % were identified as a homicide risk according to the revised DA. Psychopathic DH perpetrators were less likely to act suicidal prior to homicides and more likely to kill in a dispassionate, premeditated and gratuitously violent manner. The findings underscore the importance of coordinated community responses.