Evolutionary psychology

Evolutionary psychology is a theoretical approach in psychology that examines human cognition and behavior from a modern evolutionary perspective. It starts from the premise that mental traits, like the organs of the body, are the product of natural selection and developed because they helped solve problems of survival and reproduction in the species' past.

Its roots lie in Charles Darwin's theory of natural selection. In On the Origin of Species Darwin predicted that psychology would eventually acquire an evolutionary basis, and in the following decades he devoted much of his work to the evolutionary origins of intelligence, morality, language, emotions and sexual behavior. The modern term became widely known toward the end of the twentieth century, largely through The Adapted Mind (1992), edited by Jerome Barkow, Leda Cosmides and John Tooby.

The central claim is that the human mind consists of many specialized mechanisms, known as psychological adaptations or cognitive modules, each shaped to handle a particular recurrent problem, such as choosing a mate, detecting cheaters, recognizing kin or acquiring language. According to its proponents, these mechanisms were shaped over long periods of human evolution, in ancestral environments of small hunter-gatherer groups, which is why they speak of 'Stone Age minds' operating in modern societies. A simple example is the widespread preference for symmetrical faces or signs of health in a partner, which evolutionary psychologists interpret as responses to ancient reproductive problems.

Major authors agree that behaviors found in all cultures, such as inferring others' emotions, distinguishing relatives or cooperating, are good candidates for adaptations. The approach remains contested, however. Critics such as Stephen Jay Gould and Richard Lewontin question whether complex innate predispositions can be demonstrated, stress the role of culture, and warn that the framework can be used to justify inequality. Debates also concern the testability of its hypotheses, the difficulty of reconstructing the ancestral environment, and the possibility that some traits are non-adaptive by-products. Today the field continues to expand into areas such as economics, psychiatry and the relationship between humans and artificial intelligence.