Find over 25,000 psychological definitions


cannabis intoxication

in DSM–IV–TR and DSM–5, a reversible syndrome that occurs during or shortly after the ingestion or smoking of cannabis. It consists of clinically significant behavioral or psychological changes (e.g., enhanced sense of well-being, intensification of perceptions, a sense of slowed time), as well as one or more signs of physiological involvement (e.g., increased pulse rate, conjunctivitis, dry mouth and throat). See also substance intoxication.

Browse dictionary by letter

a b c d e f g h i j k l m n o p q r s t u v w x y z

Psychology term of the day

February 22nd 2025

Machiavellian hypothesis

Machiavellian hypothesis

the hypothesis that the evolution of intelligence, especially in its social aspects, was largely dependent on behavior characterized by a desire and striving for power. According to the hypothesis, individuals who are more Machiavellian in their behavior are more likely to be successful in adaptation and thus more likely to spread their genes to future generations. [Niccolò Machiavelli (1469–1527), Italian political theorist]