In what year was the developer of the psychological theory "Field theory" born?
Field theory (psychology) Field theory is a psychological theory (more precisely: Topological and vector psychology) which examines patterns of interaction between the individual and the total field, or environment. The concept first made its appearance in psychology with roots to the holistic perspective of Gestalt theories. It was developed by Kurt Lewin, a Gestalt psychologist, in the 1940s.
Emil Kraepelin Emil Kraepelin (] ; 15 February 1856 – 7 October 1926) was a German psychiatrist. H. J. Eysenck's "Encyclopedia of Psychology" identifies him as the founder of modern scientific psychiatry, psychopharmacology and psychiatric genetics.