Jean Gagnon, MPs, PhD, is a clinical psychologist, a neuropsychologist and an Associate Professor in the Department of Psychology at the Université de Montréal. His field of teaching is psychological assessment and personality theories. He is a full member of the Centre for Interdisciplinary Research in Rehabilitation of Greater Montreal (CRIR) at the Centre de recherche en neuropsychologie et cognition (CERNEC)
From a neuropsychological perspective, impulsive aggression and its treatment are usually conceptualized in most research as a closed executive functioning system, as though the behavior was the product of the person’s cerebral functioning only. However, recent studies in social cognitive neuroscience have emphasized the influence of social factors on cognitive processes and cerebral functioning for the development and maintenance of impulsive aggression. This chapter will review studies that highlight the relevance of initiating a shift of paradigm from a one-person-cerebral functioning model to a social interactive-cerebral functioning model of impulsive aggression. First, the influences of an aversive environment on a child’s cognitive processes and executive functioning will be discussed with the aim of explaining the development of impulsive aggressive behaviors in early childhood. Second, we will review studies that have shown how the link between social information processes and executive/inhibitory functioning serve to maintain behaviors. Finally, strengths and weaknesses of existing inhibitory control strategies will be discussed with the intention of proposing some novel ideas that incorporate a two-person neuropsychological approach.
Part of the book: Inhibitory Control Training
The aim of this study was to better understand the role of hostile attribution bias (HAB) in the relationship between cluster B personality traits and reactive aggression. Sixty-three French-speaking adults were asked to complete online questionnaires assessing their personality traits, hostile attribution bias, and aggressive behaviors. While brain activity was recorded, they were asked to read scenarios involving daily life interactions and to imagine why the characters (whose intentions were ambiguous) behaved in a provocative manner toward them. Following each scenario, we analyzed the N400 component of the event-related brain potential associated with the presentation of unexpected hostile or nonhostile intentions after each scenario. Results showed a stronger N400 amplitude during the presentation of unexpected nonhostile intentions (hostile expectancy violations) in the centro-parietal regions. There was no mediating effect of hostile or nonhostile expectancy violation in the relationship between cluster B personality characteristics and reactive aggression. Further studies are needed to better understand the psychological processes underlying aggressive behaviors in cluster B personality disorders.
Part of the book: An International Collection of Multidisciplinary Approaches to Violence and Aggression
Although the association between immature defensive styles to protect oneself from conflict in emotional context and reactive aggression (RA) has been shown recently among nonclinical individuals, the factors that may explain this relationship remain poorly understood. One putative factor is negative urgency as impulsive individuals tend to react aggressively in emotional contexts. This study aims to verify whether the relationship between image distorting defensive style and RA is moderated and not mediated by negative urgency of trait impulsivity. Nonclinical participants completed the Defensive Style Questionnaire, the UPPS Impulsivity Behavior Scale, and the Reactive-Proactive Aggression Questionnaire. Contrary to what was expected, the results showed that the relationship between image distortion and RA was entirely mediated but not moderated by the effect of negative urgency. These results suggest that when individuals get in a defensive state leading to a distortion of the image of themselves and others, they become more emotionally impulsive, leading to RA.
Part of the book: An International Collection of Multidisciplinary Approaches to Violence and Aggression