I propose a triangular theory of self to characterise the sense of selfhood in the era of social media. According to the theory, the self in the social media era comprises the represented self that is located in the private mind of the person, the registered self that is presented on social media platforms, and the inferred self that is constructed by the virtual audience. The three components of the self interact in dynamic ways to constitute a sense of selfhood and identity specific to the social media era. Autobiographical memory plays a critical role in the development and maintenance of these components. The triangular theory of self introduces new ways to understand and study memory and self in a digitally mediated world.
