Critically evaluate the following researcher's claim, focusing on the inherent difficulties in proving that a complex, universal human behavior is a result of providing a survival or reproductive advantage to distant ancestors.

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Demonstrating conclusively that a particular trait in humans, especially a complex behavior, is a product of natural selection is an extraordinarily difficult task for researchers.

Difficulty in Proving Natural Selection in Humans

Due to the significant challenge of proving that a human behavior is a product of natural selection, some evolutionary psychologists proceed by assuming that the behaviors under investigation have a genetic basis. This assumption allows research to move forward but is a key point to consider when evaluating the evidence for evolutionary claims.

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