History of psychology / История психологии

The second of the new categories to be incorporated by science was Sinn, a German word which has been variously translated as significance, value, and meaning. Without incorporating the meaning of experience and behavior, Koffka believed that science would doom itself to trivialities in its investigation of human beings; http://psychclassics.yorku.ca/Koffka/Perception/intro.htm

[p. viii] My greatest professional debt is to Professor K. Lewin. It was as a student of his that I first became interested in the field-theo- [p. ix] retical approach to problems of sociology and psychology. The mathematical conceptions developed in this work were first applied by Lewin to problems of individual psychology. I must assume total responsibility, however, for their present application to problems of sociology and social psychology. I am not at all sure that Professor Lewin will agree with all the implications I derive from his general methodological positions for these sciences. But whether my work is found good or bad, Lewin's lectures and writings mainly influenced me to attempt it. I also had the great privilege of studying with Professor W. Kohler and Professor W. Wertheimer when the ideas I have developed here were maturing. How much I owe them will be obvious to those of my readers who are familiar with their writings.