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Monetary significance of the affiliative smile: A case for reciprocal altruism

Affiliative SmileSocial IdentityReciprocal AltruismBehavioral Decision MakingProsocial BehaviorSocial Exchange TheorySocial BehaviorSocial PsychologyEmpathyMonetary SignificanceAltruismSocial InfluenceSocial SciencesApplied Social PsychologyHappinessPsychologyBehavioral Economics