ABSTRACT
Individuals vary their behavior from moment to moment a great deal, often acting “out of character” for their traits. This article investigates the consequences for authenticity. We compared 2 hypotheses—trait consistency, that individuals feel most authentic when acting in a way consistent with their traits; and state‐content significance, that some ways of acting feel more authentic because of their content and consequences, regardless of the actor's corresponding traits. Three studies using experience‐sampling methodology in laboratory and natural settings, with participants ages 18–51, strongly supported the state‐content significance hypothesis and did not support the trait‐consistency hypothesis. Authenticity was consistently associated with acting highly extraverted, agreeable, conscientious, emotionally stable, and intellectual, regardless of the actor's traits. Discussion focuses on possible implications for within‐person variability in behavior and for the nature of the self‐concept.