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"Throughout the preparation of this volume I have been guided by a central purpose rather than by any fixed and predetermined point of view. This purpose is to examine the determination of human and animal behavior in its varied aspects. From one standpoint the study of motivation is concerned with energetics, i.e., with those conditions which evoke specific bodily movements and which regulate the general level of activity. From another standpoint the study is an investigation of the factors which regulate and control the course of activity. This includes all those activities designated by psychologists as purposive behavior. From still another point of view our problem relates to the development of motivating factors: it is a genetic study of the change and interplay of interests, desires, habit organizations, and similar determiners of behavior"--

Motivation (Psychology)

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