Affective and predatory violence: from evolutionary adaptation to psychiatric morbidity

Area of Science:

• Neuroscience
• Evolutionary Psychology
• Forensic Psychiatry

Background:

• Mammalian research over a century supports a bimodal nature of violence.
• Predatory violence evolved from hunting behaviors, while affective violence stems from defending against threats.
• Both violence types are neurobiologically atavistic but socially regulated.

Purpose of the Study:

• To underscore the importance of distinguishing between affective and predatory violence.
• To detail the criteria for discerning these two modes of violence.
• To inform psychiatric and forensic evaluations of violent behavior.

Main Methods:

• Review of mammalian research on violence.
• Analysis of evolutionary origins of predatory and affective violence.
• Examination of neurobiological underpinnings and societal controls of violence.

Main Results:

• Violence manifests in two primary modes: predatory (instrumental) and affective (reactive).
• Predatory violence is linked to hunting, affective violence to self-defense.
• Societal factors like learning, culture, and law regulate violence expression.

Conclusions:

• Discerning between affective and predatory violence is critical for mental health professionals and forensic evaluators.
• Understanding the distinct characteristics of each violence type aids in accurate threat assessment.
• This perspective provides a framework for analyzing extreme violent events.