Lincoln Study Finds Mild, Lethal Aggression Separate
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- Prof. Bonaventura Majolo led the University of Lincoln study, working with Dr. Samantha Wakes and Prof. Marcello Ruta, to examine primate aggression.
- University of Lincoln analyzed aggression data from 100 primate species, including humans, to compare mild and lethal behaviors.
- Evolution Letters reported that species with frequent mild aggression are not more likely to engage in lethal violence.
- Prof. Marcello Ruta contributed to the finding that lethal aggression, such as adult rival killing and infanticide, follows distinct evolutionary dynamics separate from everyday conflict.
- Prof. Bonaventura Majolo reported that five aggression types were examined, revealing moderate links among lethal forms but little connection with mild aggression.
- Evolution Letters published the study, challenging the view that aggression is a single trait and that everyday aggression predicts lethal conflict.
Why it matters: Anthropologists and evolutionary biologists gain a more nuanced framework for interpreting human and primate violence, while theories that treat aggression as a single trait lose credibility; the study urges reconsideration of aggression‑based species rankings and may reshape debates on nature‑versus‑nurture influences.
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