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CU R RE N T D I R E CT I O NS IN P SYC H OL OG I C AL SC I EN C E An Adaptation for Altruism? The Social Causes, Social Effects, and Social Evolution of Gratitude Michael E. McCullough, Marcia B. Kimeldorf, and Adam D.
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Document Date: 2016-01-04 18:56:52
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CU R RE N T D I R E CT I O NS IN P SYC H OL OG I C AL SC I EN C E An Adaptation for Altruism? The Social Causes, Social Effects, and Social Evolution of Gratitude Michael E. McCullough, Marcia B. Kimeldorf, and Adam D.