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Asymmetries in altruistic behavior during violent intergroup conflict.
1Behavioral Economics and Philosophy of Biology, JLU Giessen, Germany, and Peter Löscher Chair of Business Ethics, TU München, Germany.
Altruistic behavior in warfare is more common during defense than attack. This finding suggests evolutionary adaptations to ancestral survival needs, refining theories on intergroup conflict and altruism.
Area of Science:
- Evolutionary psychology
- Behavioral ecology
- Social anthropology
Background:
- Warfare is often modeled as a symmetrical prisoner's dilemma, ignoring strategic differences between attack and defense.
- Ancestral conditions suggest differing risks and benefits for attack versus defense, impacting survival and kin.
- Previous research indicates defense success was crucial for survival.
Purpose of the Study:
- To investigate if altruistic behavior in intergroup conflict differs strategically between attack and defense.
- To test the hypothesis that altruism evolves more readily in defensive situations.
Main Methods:
- Analysis of historical case data from 20th-century wars.
- Empirical investigation of altruistic behavior frequency during conflict.
Main Results:
- Altruistic behavior towards in-group members occurs more frequently during defensive actions.
- Soldiers exhibit greater altruism when defending against enemy attacks.
Conclusions:
- The asymmetry in altruism reflects adaptive responses to ancestral strategic differences between attack and defense.
- The findings necessitate refining theories on the evolution of intergroup conflict and altruism.
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