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Activity theory (AT; Russian: Теория деятельности) [1] is an umbrella term for a line of eclectic social-sciences theories and research with its roots in the Soviet psychological activity theory pioneered by Sergei Rubinstein in the 1930s. It was later advocated for and popularized by Alexei Leont'ev.
The activity theory of aging, also known as the implicit theory of aging, normal theory of aging, and lay theory of aging, proposes that aging occurs with more positive outcomes when adults stay active and maintain social interactions as they get older. [1] Activity theory suggests that the aging process is slowed or delayed, and quality of ...
Cultural-historical activity theory (CHAT) is a theoretical framework [1] to conceptualize and analyse the relationship between cognition (what people think and feel) and activity (what people do). [ 2 ] [ 3 ] [ 4 ] The theory was founded by L. S. Vygotsky [ 5 ] and Aleksei N. Leontiev , who were part of the cultural-historical school of ...
A leading activity is conceptualized as joint, social action with adults and/or peers that is oriented toward the external world. In the course of the leading activity, children develop new mental processes and motivations, which "outgrow" their current activity and provide the basis for the transition to a new leading activity (Kozulin, Gindis, Ageyev, & Miller 2003: 7).
Modeled as a triangle, activity theory considers how multiple factors (subject, object, mediating artifacts, rules, and division of labor) existing in an activity system (environment) interact to achieve an outcome. Central to activity theory is the concept of mediation. Human activities are driven by a need to achieve a certain outcome or goal.
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For Leontiev, the psychological [3] of 'activity' consisted of those processes "that realize a person's actual life in the objective world by which he is surrounded, his social being in all the richness and variety of its forms" (Leontiev 1977). The core of Leontiev's work is the proposal that we can examine human processes from the perspective ...
Various collaborative online encyclopedias were attempted before the start of Wikipedia, but with limited success. [19] Wikipedia began as a complementary project for Nupedia, a free online English-language encyclopedia project whose articles were written by experts and reviewed under a formal process. [20]