American cognitive psychologist and polymath Leon Festinger was born on the 8th May, 1919 in Brooklyn, New York to Russian immigrant parents. He became one of the most influential psychologists of the 20th century publishing on topics ranging from cognitive dissonance through to psychosocial archaeology (Open Learn, 2019a). In 1939 as WW2 darkened Europe, Festinger… Read more

Kurt Lewin was born to German Jewish parents in 1890 in what is now Poland. He was educated in Berlin before attending the University of Freiburg as a medical student and moving to Munich to study biology. As a soldier in the German Army he gained his PhD in 1916 under the supervision of empiricist… Read more