Exploring Intimate Partner Violence (IPV) Through an Evolutionary Perspective: Anger as a Triggering Factor

With infidelity existing both in ancient environments and in modern society, our study introduces two adaptive problems from an evolutionary perspective: sexual jealousy and paternal uncertainty. The adaptations evolved from these adaptive problems are the behavioral outcomes of mate guarding. Our research aims to investigate how Intimate Partner Violence (IPV) becomes a form of mate guarding. We hypothesized that anger is a crucial trigger between Welfare Tradeoff Ratios (WTR) and IPV. In cross-sectional analysis, we predicted that there are positive correlations between each of the three elements. Longitudinally, we expected changes in WTR differences to predict the frequency of IPV. Our research methodology consisted of recruiting male participants to complete online questionnaires assessing their expected and perceived WTR toward their partner, anger level, and IPV behaviors in response to fictional infidelity scenarios. Findings were designed to validate that anger largely mediates the relationship between WTR differences and IPV, highlighting the critical role of anger in mate guarding behaviors. By exploring how manipulating WTR differences can predict IPV frequency, our findings can inform treatment approaches, policy development, and educational programs that aim to reduce IPV by addressing WTR differences and anger management.