Take my advice: Intrinsic emotion regulation is more effective under external guidance.

Traditionally, research into emotion regulation (ER) has focused primarily on the intra-personal processes through which we regulate our own emotions intrinsically. More recently, however, studies have begun to explore the inter-personal nature of intrinsic ER – that is, how we regulate our emotions under the guidance of others. Preliminary evidence suggests that the ER is more effective when implemented inter- rather than intra-personally, but these findings are based exclusively on subjective ratings that capture only the experience of emotions. The current study therefore investigated whether this apparent superiority of inter-personal intrinsic ER could be replicated and extended to physiological measures of affective reactions – namely, metrics of electrodermal activity. In addition, we administered several self-report instruments to measure behavioural phenotypes associated with individual differences in intrinsic ER to identify groups that might benefit maximally from inter-personal guidance. In a within-subjects design, a large sample (N=146) were required to down-regulate their emotional reactions to negatively valenced images using an ER strategy they had chosen themselves intra-personally or one that had been recommended to them inter-personally. Subjective ratings and physiological responses converged to demonstrate the greater effectiveness of inter- over intra-personal ER in decreasing negative affective reactions, illustrating its potential therapeutic application for conditions characterised by emotion dysregulation. Interestingly, though, data from the self-report instruments did not reveal patterns of behaviour associated with its efficacy, and so it remains to be seen if and how the benefits of inter-personal ER extend to clinical populations.