Roles guide rapid inferences about agent knowledge and behavior

The ability to predict and understand other people’s actions is critical for real-world social behavior. Here we hypothesized that representations of social roles (e.g., cashier, mechanic, doctor) enable people to build rapid expectations about what others know and how they might act. Using a self-paced read- ing paradigm, we show that role representations support real time expectations about how other people might act (Study 1) and the knowledge they might possess (Study 2). Moreover, people reported more surprisal when the events deviated from role expectations, and they were more likely to misremember what happened. Our results suggest that roles are a powerful route for social understanding that has been previously under- studied in social cognition.