The role of schizoid personality, peritraumatic dissociation and behavioral activation system in a case of parricide

The goal of this paper is to emphasize several important details through a case study of parricide: a) the schizoid personality structure as a potential basis for brutal offenses, b) the role of dissociation during the commitment of crime; and c) the contribution of non-standard psychological assessment instruments and Gray's reinforcement sensitivity theory in illuminating the killer's personality and motivation for the offense. A parricide case was analyzed through psychiatric examination, standard clinical psychological assessment, and Behavioral Inhibition and Activation Scales based on Gray's theory. It was determined that the perpetrator suffered from schizoid personality disorder and that there were visible signs of peritraumatic dissociation at the moment he committed the offense. It was concluded that: a) a schizoid personality sometimes become a perpetrator of a brutal offense in situations where he feels he is in danger of punishment, and his personal space is being threatened, b) dissociation, activated by murder itself, can help the murderer to protect himself from a traumatic situation which overcomes his resources, and c) Gray's theory can serve as a framework for understanding individual cases as this one. (C) 2012 Elsevier Ltd. All rights reserved.