Authenticity attenuates the negative effects of interpersonal conflict on daily well-being

• Interpersonal conflicts are significant threats to psychological well-being.
• Trait authenticity was examined as a protective factor using a diary design.
• Ps low in trait authenticity reported lower well-being following conflicts.
• Ps high in trait authenticity showed no association between conflict and well-being.
• Authenticity effects also significant controlling for agreeableness and neuroticism.

Prior research has established a consistent relationship between felt authenticity and greater psychological and physical well-being. Nevertheless, a number of important questions remain regarding the role of authenticity in shaping individuals’ responses to stressful events in daily life. Interpersonal conflict in particular, has been established as one of the strongest contributors to daily stress, and a number of prior studies suggest that the negative effects of interpersonal conflict may be moderated by personality factors. The present work used a diary design to examine the role of trait authenticity in buffering individuals from the negative effects of interpersonal conflict. More importantly, we show that the protective role of trait authenticity functions independently from the previously established effects of agreeableness and neuroticism.