Psychological adaptation
（重定向自Evolved psychological mechanism）
A psychological adaptation, also known as evolved psychological mechanism (EPM), is evolved animal behavior resulting from evolutionary pressures. It could serve a specific purpose, have served a purpose in the past (see vestigiality), or be a side-effect of another EPM (see spandrel (biology)). Evolutionary psychology proposes that the human psychology mostly comprises psychological adaptations, in opposition to tabula rasa or blank slate model of human psychology such as the standard social science model, popular throughout most of the twentieth century. Instead, EPM's are ongoing processes in their emotions and intellect, that help individuals with their well being whether its through their mental state of mind or in culture.