On the Verifiability of Evolutionary Psychological Theories: An Analysis of the Psychology of Scientific Persuasion

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Abstract
Evolutionary psychological theories have engendered much skepticism in the modern scientific climate. Why? We argue that, although sometimes couched in the language of unfalsifiability, the skepticism results primarily from the perception that evolutionary theories are less verifiable than traditional psychological theories. It is more difficult to be convinced of the veracity of an evolutionary psychological theory because an additional layer of inference must be logically traversed: One not only has to be persuaded that a particular model of contemporary psychological processes uniquely predicts observed phenomena, one must also be persuaded that a model of deeply historical processes uniquely predicts the model of psychological processes. This analysis of the psychology of scientific persuasion yields a number of specific suggestions for the development, testing, and discussion of evolutionary psychological theories.