APA Dictionary of Psychology

the proposition that cognitive development is the result of a dynamic interaction between the individual and the environment. According to this theory, a skill (or dynamic skill) is the capacity to act in an organized way in a specific context, and in order for a skill to be developed to its optimal level, it must be exercised in the most supportive of environments. Also called dynamic skill theory. [proposed by U.S. psychologist Kurt W. Fischer (1943–  )]