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Reflections on Positive Emotions and Upward Spirals.
Fredrickson BL, Joiner T. Fredrickson BL, et al. Perspect Psychol Sci. 2018 Mar;13(2):194-199. doi: 10.1177/1745691617692106. Perspect Psychol Sci. 2018. PMID: 29592643 Free PMC article.
107 results