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Much evidence has been adduced to support the view, originally proposed by Kraepelin, that mania increases creativity Examples of supporting evidence are findings of similarity in thought between creative persons and manic-depressives and high creativity in normal relatives of manic-depressives However, such data are correlational and are therefore equivocal concerning the hypothesis that mania is a cause of increased creativity The present study analyzed the relationship between mood and productivity in the career of composer Robert Schumann, who has been diagnosed as bipolar Schumann's positive mood was related to increased quantity of his work but not to increased quality, indicating that mania did not increase creativity of thought processes
Robert W. Weisberg (Tue,) studied this question.
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