Reconsidering evolved sex differences in jealousy: comment on Harris (2003).

Area of Science:

• Evolutionary Psychology
• Human Behavior
• Social Psychology

Background:

• Harris (2003) reviewed evidence on evolved sex differences in jealousy.
• Harris concluded that data do not support such differences, citing flaws in spousal abuse, homicide, and morbid jealousy evidence.
• Criticisms of self-report and psychophysiological data by Harris were based on misinterpretations of evolutionary psychological theory.

Purpose of the Study:

• To re-evaluate the evidence for evolved sex differences in jealousy.
• To address criticisms of self-report and psychophysiological measures in the context of evolutionary psychology.
• To propose an integrative model for understanding jealousy.

Main Methods:

• Analysis of existing self-report studies (forced-choice and non-forced choice) on jealousy.
• Review of psychophysiological measures related to jealousy.
• Critique of Harris's interpretation of evolutionary psychological theory and empirical data.
• Examination of refutational evidence presented by Harris.

Main Results:

• Self-report studies, when correctly interpreted (interaction between sex and infidelity type), strongly support sex differences in jealousy.
• Psychophysiological data offer some support, though validity concerns exist.
• Evidence cited by Harris as refutational does not, upon closer examination, refute the theory.
• Harris's criticisms were based on mischaracterizations of the theory and its implications.

Conclusions:

• Evolved sex differences in jealousy are supported by empirical data, particularly self-report measures.
• An integrative model incorporating sociocultural variables and evolved sex differences is necessary to fully understand jealousy.
• Further research is needed to refine our understanding of jealousy's origins and manifestations.