Effects of a stimulus associated with a victim's pain on later aggression

Non-angry aggressive arousal and angriffsberietschaft: A narrative review of the phenomenology and physiology of proactive/offensive aggression motivation and escalation in people and other animals

Human aggression typologies largely correspond with those for other animals. While there may be no non-human equivalent of angry reactive aggression, we propose that human proactive aggression is similar to offense in other animals' dominance contests for territory or social status. Like predation/hunting, but unlike defense, offense and proactive aggression are positively reinforcing, involving dopamine release in accumbens. The drive these motivational states provide must suffice to overcome fear associated with initiating risky fights. We term the neural activity motivating proactive aggression "non-angry aggressive arousal", but use "angriffsberietschaft" for offense motivation in other animals to acknowledge possible differences. Temporal variation in angriffsberietschaft partitions fights into bouts; engendering reduced anti-predator vigilance, redirected aggression and motivational over-ride. Increased aggressive arousal drives threat-to-attack transitions, as in verbal-to-physical escalation and beyond that, into hyper-aggression. Proactive aggression and offense involve related neural activity states. Cingulate, insular and prefrontal cortices energize/modulate aggression through a subcortical core containing subnuclei for each aggression type. These proposals will deepen understanding of aggression across taxa, guiding prevention/intervention for human violence.

Perception of an adversary as a function of masculinity, sex, and aggression/empathy

The study was designed to test whether men and women identifying with a masculine stereotype differ in their perception of a confederate (adversary) who displays either an empathetic or aggressive role in resolving a disagreement over social issues. It was hypothesized that masculine individuals would be more perceptually sensitive to aggressive cues of an adversary and make more hostile responses than nonmasculine individuals. Conversely, nonmasculine individuals were hypothesized to be more perceptually sensitive to empathetic cues of an adversary and make fewer hostile responses than masculine individuals. Results of both perceptual measures and the measure of hostility did not support the hypotheses. Nonmasculine individuals perceived the adversary more positively than masculine individuals regardless of strategy of resolution.