I study the psychology of media use in everyday life. This includes media influences on cognition, emotion, and behaviour (e.g., attitudes, norms, self-concept, and self-regulation), and the ways in which contextual and dispositional factors may moderate these effects. I examine media use as both a predictor (i.e., the effects media have) and as an outcome (i.e., the psychological antecedents of media use). I am particularly interested in the relation of media use to 1) health and wellbeing, broadly construed (e.g., substance use, sexual wellness), 2) stereotyping and prejudice, and 3) person perception.