Activity theory
Activity theory (AT; ) 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 Lev Vygotsky , Alexei Leont'ev and Sergei Rubinstein. These scholars sought to understand human activities as systemic and socially situated phenomena and to go beyond paradigms of reflexology (the teaching of Vladimir Bekhterev and his followers) and classical conditioning (the teaching of Ivan Pavlov and his school), psychoanalysis and behaviorism. It became one of the major psychological approaches in the former USSR, being widely used in both theoretical and applied psychology, and in education, professional training, ergonomics, social psychology and work psychology.
Social actions
The basic concept was primarily developed in the non-positivist theory of Max Weber to observe how human behaviors relate to cause and effect in the social realm. For Weber, sociology is the study of society and behavior and must therefore look at the heart of interaction. The theory of social action, more than structural functionalist positions, accepts and assumes that humans vary their actions according to social contexts and how it will affect other people; when a potential reaction is not desirable, the action is modified accordingly. Action can mean either a basic action (one that has a meaning) or an advanced social action, which not only has a meaning but is directed at other actors and causes action (or, perhaps, "inaction").