Find over 25,000 psychological definitions

grandmother hypothesis

the proposition, based on evolutionary theory, that the contribution of grandparents (particularly grandmothers) to the care of their grandchildren has been a factor in extending the human lifespan. [proposed by U.S. evolutionary biologist George C. Williams (1926–2010)]

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

May 21st 2024



n. in the analytic psychology of Carl Jung, the public face an individual presents to the outside world, in contrast to more deeply rooted and authentic personality characteristics. This sense has now passed into popular usage. The term is taken from the mask worn by actors in Roman antiquity.