Lust for violence: Appetitive aggression as a fundamental part of human nature

Abstract

Abstract Appetitive aggression describes a biologically-driven form of aggressive behaviour and violence characterized by positive affect. In contrast to reactive aggression, which has the function of resisting a threat, and reducing concomitant negative emotional arousal and anger, appetitive aggression underlies the pleasure of violence. A prototypical example is hunting, which can in turn transfer to the hunting of humans and can even result in bloodlust, and killing for its own sake. At the physiological level, this morally illicit pleasure is accompanied by an adrenalin surge, the release of cortisol and endorphins. In order to activate reward systems via appetitive aggression, their moral and cultural restraints need to be overridden. For example, armed groups work to dehumanize the enemy. Once initiated, a positive feedback loop is generated: As the individual commits more acts of violence with elements of positive affect, the tendency to commit them grows, and they begin to be perceived more positively. A latent passion for fighting and dominance can probably be evoked in almost all men and in some women. The cumulative outcome of whole groups, tribes, or communities enacting this aggression is war and destruction, to the point of trying to extinguish entire ethnic groups:“… and yes, human beings, hundreds of thousands of otherwise normal people, not professional killers, did it.”(from “The Killers in Rwanda Speak” by Jean Hatzfeld, 2005). Thus, appetitive aggression, the disposition towards a lust for violence, is by no means a psychopathological anomaly but an intrinsic part of the human behavioural repertoire. Morality, culture and the state monopoly on violence constitute the guards that regulate aggression potential and to channel it into socially useful forms.

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