Contributions

Founder of social psychology, jewish, born near my hometown in Poland (Poznan) in then Prussia.
Lewin also proposed Herbert Blumer's interactionist perspective of 1937 as an alternative to the nature versus nurture debate. Lewin suggested that neither nature (inborn tendencies) nor nurture (how experiences in life shape individuals) alone can account for individuals' behavior and personalities, but rather that both nature and nurture interact to shape each person. This idea was presented in the form of Lewin's equation for behavior, B = ƒ(P, E), which means that behavior (B) is a function (f) of personal characteristics (P), and environmental characteristics (E). [1]
Founder of action research [2]

Kurt Lewin