John Adair (author) at the University of Exeter from 1990 to 2000. He is currently an Emeritus Fellow of the Windsor Leadership Trust where he regularly speaks on Leadership development programmes. Since 2006, he has been Honorary Professor of Leadership at the China Executive Leadership Academy in Pudong. In 2009 he was appointed Chair of Leadership Studies United Nations System Staff College in Turin. He is President of Adair International. John Adair (author) Professor John Eric Adair (born 18 May 1934) is a British academic who is a leadership theorist and author of more than forty books (translated into eighteen languages) on business,
Kurt Lewin though Lewin worked under Stumpf to complete his dissertation, the relationship between them did not involve much communication. Lewin studied associations, will, and intention for his dissertation, but he did not discuss it with Stumpf until his final doctoral examination. In 1917, Lewin married Maria Landsberg. In 1919, the couple welcomed their daughter Esther Agnes, and in 1922, their son Fritz Reuven was born. They divorced around 1927, and Maria immigrated to Palestine with the children. In 1929, Lewin married Gertrud Weiss. Their daughter Miriam was born in 1931, and their son Daniel was born in 1933. Lewin had originally