Broadening Horizons: Self‐Expansion in Relational and Non‐Relational Contexts

Abstract The self‐expansion model posits that individuals are motivated to broaden their sense of self by acquiring new identities, developing new perspectives, enhancing capabilities, and gaining resources. The self‐expansion motivation is driven by individuals' desire to increase their potential self‐efficacy and ability to accomplish goals. In this article, we discuss two main ways individuals self‐expand – by forming relationships and including the other in the self and through engaging in novel activities that are challenging and/or interesting either on one's own or with a relationship partner. We provide an overview of recent research detailing the numerous interpersonal and intrapersonal benefits and implications of self‐expansion. Additionally, we differentiate self‐expansion from a series of potentially associated constructs.