Evolutionary psychologists argue that jealousy has been "hard-wired" into humans as a means of maximizing the likelihood that a given sexual partner's genes will be passed down to later generations.

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This is a commonly held belief among evolutionary psychologists, who argue that jealousy evolved as a means of preventing one's mate from engaging in extramarital or extrapair copulations, which could lead to the diversion of resources away from one's own offspring and reduce the quality of one's offspring's genes.

Evolutionary Psychologists Argue That Jealousy Has Been "Hard-Wired" into Humans