Though he died in 1947 aged 56, even a cursory review of modern management practices reveals the enduring influence of Kurt Lewin, the German-American psychologist.
The source of his influence can be found in the confluence of three aspects of his personal career.
The first was his early training in mathematically-oriented psychology, focused on the study of human perception. From this he developed a view that it was possible to apply the disciplines of the physical sciences to psychological phenomena.
The second was his rejection of reductionist ideas, which hold that complex phenomena can be explained in terms of simpler building blocks. This formed the tradition of German psychology.
Prof Lewin was much more interested in Gestalt psychology, which implied that psychological phenomena are related to the interaction of the person with their environment and the result of the interplay of many forces within the person.