Predicting whether a behavioral trait is adaptive is difficult because modern human traits evolved under past environmental and social conditions that are poorly understood, meaning behaviors only needed to be adaptive in the past and can only be hypothesized about today.

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A significant limitation in evolutionary psychology is that its common research studies, which test predictions based on evolutionary theory, do not provide strong evidence that a behavior is adaptive. This weakness stems from the fact that these studies often lack definitive information confirming that the behavior has a genetic basis and is not entirely the product of cultural influences.

Limitations of Evolutionary Psychology

Spielman, R. M., Jenkins, W. J., & Lovett, M. D. (2020, April 22). Psychology (2nd ed.). OpenStax. https://openstax.org/books/psychology-2e/pages/1-introduction

OpenStax Psychology (2nd ed.) Textbook

A research study observes that across many different modern cultures, individuals tend to seek romantic partners with specific, predictable traits. The researchers conclude that these preferences are evolved psychological adaptations that increased reproductive success in ancestral environments. Which of the following presents the most significant challenge to this conclusion?

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