Kurt Lewin

Kurt Lewin (/lɛˈviːn/ lə-VEEN; 9 September 1890 – 12 February 1947) was a German-American psychologist, known as one of the modern pioneers of social, organizational, and applied psychology in the United States.[1] During his professional career, Lewin's academic research and writings focuses on applied research, action research, and group communication. Lewin is often recognized as the "founder of social psychology" and was one of the first to study group dynamics and organizational development. https://en.wikipedia.org/wiki/Kurt_Lewin