其他摘要：The paper studies the variables considered by Lewin to be important indexes of psychological development: variaty of behavior, organization of behavior, the extension of the life space, the degree of interdependence of behavíor, and the degree of realismo Also the variable related to the rigidity or flexibility of the bounderies between regions is studied in the context of several experiments by Lewin and his sutdents. A parallel can be drawn between Lewin´s theory and the exyperimental analysis of behavior, and both Lewin and Skinner can be considered practical theorists.
