For example, the ability of toddlers to learn a language with virtually no training is likely to be a psychological adaptation.
Problems of survival are thus clear targets for the evolution of physical and psychological adaptations.
Finally, like many other psychological adaptations, personality traits may be facultative-sensitive to typical variations in the social environment, especially during early development.
There has also been increasing acknowledgment of culture-bound disorders, which may be viewed as an argument for an environmental versus genetic psychological adaptation.
In a Darwinian outlook, evolutionary psychology is seen as a succession of psychological adaptations occurring at individual times.
The idea of Zietgeist also has a way of explaining psychological adaptation.
These psychological adaptations include cognitive decision rules that respond to different environmental, cultural, and social circumstances in ways that are (on average) adaptive.
Pinker argues that human behavior is substantially shaped by evolutionary psychological adaptations.
From the 1920s to the 1960s attempts were made to differentiate between addiction; and habituation, a less severe form of psychological adaptation.
An example of a facultative psychological adaptation may be adult attachment style.