Jealousy Vs Physical Infidelity

Drawing on evolutionary theory, I hypothesized that physical infidelity leads to more mate abandonment behavior in men than emotional infidelity, while emotional infidelity leads to more mate abandonment behavior in women than physical infidelity. Previous research has demonstrated sex differences in emotional responses to infidelity. Men demonstrate greater jealousy in response to a partner's physical infidelity, whereas women demonstrate greater jealousy in response to a partner's emotional infidelity (Buss et al., 1992). These sex differences in jealousy are further supported by Trivers' (1972) Parental Investment Theory, which states that a man's reproductive fitness is endangered by sexual infidelity, and a woman's reproductive
fitness