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.

noun

attitude , behaviorism , medicine , mental make-up , mental processes , personality study , psych , science of the mind , therapy , way of thinking , where head is at , ethos , mentality , mind , mindset , psyche