Identity Multiplicity Signaling Fosters Interpersonal Trust

ABSTRACT This study investigates how and why signaling multiple identities (vs. a single identity) influences interpersonal trust. Seven studies—including five experiments, one qualitative study, and one supplementary study in the field setting—demonstrate that identity multiplicity signaling promotes interpersonal trust by enhancing perceived authenticity. We also test alternative explanations and show that the effect of identity multiplicity signaling on interpersonal trust diminishes when monetary exchange cues are highlighted and when the signaled multiple identities are inconsistent. Taken together, the results advance the understanding of the multifaceted nature of identity and its social cognitive consequences. This study also offers practical implications for individuals and groups to take advantage of identity multiplicity signaling in the context of online communication.