plural psychologies
Definition of psychology
1
: the science of mind and behavior
2a
: the mental or behavioral characteristics of an individual or group
b
: the study of mind and behavior in relation to a particular field of knowledge or activity
3
: a theory or system of psychology
Freudian psychology the psychology of Jung
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Merriam-Webster unabridged
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Time Traveler for psychology
The first known use of psychology was in 1749
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