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Kurt Lewin - The valence of an object usually derives...
The valence of an object usually derives from the fact that the object is a means to the satisfaction of a need, or has indirectly something to do with the satisfaction of a need. (Kurt Lewin)

The valence of an object usually derives from the fact that the object is a means to the satisfaction of a need, or has indirectly something to do with the satisfaction of a need.

Kurt Lewin

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fact need object satisfaction something valence means

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