Abstract

Abstract Controversy and misunderstanding often surround studies of human behavior that utilize the modern adaptationist approach (e.g., see Scarr’s [1989] view of evolutionary psychology; but also see Crawford et al., 1990). Some of the misunderstanding stems from a lapse in recognition of the importance of both proximate and ultimate causes and explanations for adaptations, the complexly integrated, purposeful traits of individual organisms. Proximate explanations for the existence of adaptations focus on genetic, biochemical, physiological, developmental, social, and all other immediate causes leading to the expression of adaptations. Ultimate explanations of adaptation have their theoretical foundation in causes that operated during evolutionary history to lead to adaptation.

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