- the science of the mind or of mental states and processes.
- the science of human and animal behavior.
- the sum or characteristics of the mental states and processes of a person or class of persons, or of the mental states and processes involved in a field of activity: the psychology of a soldier; the psychology of politics.
- mental ploys or strategy: He used psychology on his parents to get a larger allowance.
- the scientific study of all forms of human and animal behaviour, sometimes concerned with the methods through which behaviour can be modified
- the mental make-up or structure of an individual that causes him or her to think or act in the way he or she does
