Abstract: In this paper the author focused upon the problem of dynamics inKurt Lewin's psychology. He analysed and discussed Lewin's dynamicconcepts, dynamic model, and dynamic point of view, expounded the his-torical and theoretical significance and the methodological significance init. The author holds that "dynamics" is the heart of Lewin's psycholo-gical study and the basis of his theoretical construct. So that in order tounderstand Kurt Lewin and his theory, one must understand the dynamicsin it.

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