Facultative and nonfacultative adaptation analysis of sex differences of attitude toward infidelity

Abstract

The study of sex differences in attitudes toward infidelity has been a popular topic to discuss from the evolutionary psychology perspective: Men appear to be more concerned with sexual infidelity while women are more concerned with sexual infidelity. In this essay, we propose that the reason behind this phenomenon is facultative adaptation. We resemble David Buss’s research experiment in a community with similar ethnicity and cultural background. From the data we collected, whether or not environmental factors are the dominant reason why there are sex differences in attitudes toward infidelity.