Abstract

Within separate academic disciplines there exist two consistent findings that have emerged. Behavior geneticists, on one hand, continue to uncover moderate to high heritability estimates for virtually every human trait measurable. Evolutionary psychologists, on the other hand, have thoroughly documented species-wide universality in various human traits, suggesting that natural (or sexual) selection may have directly favored such outcomes. The goal of the current study, then, is to explore ways in which these lines of inquiry can be united via the use of behavior genetic methodologies coupled with evolutionary thought. Additionally, we attempt to unite our findings in a framework that can both account for the existence of heritable individual differences, while also understanding the importance of species-wide characteristics.

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