In the year of 1917 he published his first important article in a psychological news magazine. There he mentioned first
time his idears about his later field theory. This psychological theory was one of his greatest achievements in psychology.
After the First World War he worked at the Berlin Institute together with Hans Rapp. In this time he war teacher on a High School.
In 1920 he publishes his first psychological book with the German title „Die Sozialisierung des Taylorsystems“.
From 1920 to 1933 he lectured and gave seminars in philosophy and psychology at the
Friedrich-Wilhelm-University of Berlin. Together with his colleagues Kurt Koffka, Wolfgang Köhler
and Max Wertheimer he founded the Gestalt school of psychology.
In 1926 he started different psychological researches in affect psychology and published
his results in an article.
1931 he published a work, where he wrote about problems in education of children. In this work he regarded these
problems in the site of his field theory.
Because of the political situation in Germany he had to emigrate as a jewish person to the United States.
He had some former contacts to the Stanford University, where he held some psychological presentations. Since 1933 he lived
in the United States.
First he worked at the Cornell University of Ithaca. In 1935 he changed to the University of Iowa,
where he was professor for childrens psychology for the next nine years.
In 1936 he published a work, where he described the fundaments of the topological psychology.
In Germany this book under the title „Grundzüge der topologischen Psychologie“ was published years later
In the years of 1937 and 1938 he started researches with the target to find different leadership styles
and their consequences in groups.
1944 he worked at the Massachusetts Institute of Technology. At february, 12th, 1947 Kurt Lewin died
in Newtonville at the age of 56 years. It was a heart attack, that ended his hife so early. At this time
he was one of the most important psychologists in the world.