Evolved Psychological Mechanism (EPM)

An evolved psychological mechanism (EPM) is a psychological adaptation that a species takes on as a result of evolutionary pressures. Instincts are a form of an EPM, for example, the innate fear of heights that the majority of infants have. Because an EPM develops due to a survival need or adaptation the EPM typically helps the organism survive and reproduce which encourages the transmission and future usage of the EPM.

For instance, some species have taken on behavioral changes as their environment has changed such as a species of Japanese monkeys from a cold climate that learned in recent years how to enjoy sitting in local hot springs for warmth.