This review demonstrates that an individualist view of emotion and regulation is untenable. First, I question the plausibility of a developmental shift away from social interdependency in emotion regulation. Second, I show that there are multiple reasons for emotional experiences in adults to elicit a process of social sharing of emotion, and I review the supporting evidence. Third, I look at effects that emotion sharing entails at the interpersonal and at the collective levels. Fourth, I examine the contribution of emotional (...) sharing to emotion regulation together with the relevant empirical evidence. Finally, the various functions that the social sharing of emotion fulfills are reviewed and the relevance of the social sharing of emotion for emotion scientists is discussed. (shrink)