Find over 25,000 psychological definitions


disengagement theory

a theory proposing that old age involves a gradual withdrawal of the individual from society and of society from the individual. According to this theory, those happiest in old age have turned their attention inward toward the self and away from involvement in the outside world. Empirical research has shown, however, that this mutual withdrawal is not an inevitable component of old age. Compare activity theory; continuity theory. [developed by 20th-century U.S. psychologists Elaine Cumming and William E. Henry]

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

January 30th 2025

antibiotic

antibiotic

n. a drug used to destroy pathogenic or otherwise harmful microorganisms, especially bacteria. Antibiotics can be produced by or obtained from living cells (e.g., molds, yeasts, bacteria) or manufactured as synthetic chemicals with effects similar to natural antibiotics. Some work by interfering with bacterial reproduction, whereas others may disrupt the normal life functions of the pathogen. Antibiotics are ineffective against viruses. Overuse and inappropriate use of these agents are contributing to the development of bacterial resistance to many commonly used antibiotics.