Reward, Affiliation, and Dominance Smiles are Associated with Distinct Mental Content
The present work advances the science of the smile by investigating how perceivers mentally represent this heterogenous expression. Across both perception- and production-based tasks, we report evidence that perceivers mentally represent reward, affiliation, and dominance smiles as distinct categories associated with specific behaviors, social contexts, and facial movements. Study 1 demonstrates that perceivers expect to behave differently in response to each type of smile when embedded in a simulated economic game. Study 2 demonstrates that perceivers use distinct words to describe the social contexts in which they anticipate encountering each type of smile. Study 3 demonstrates that producers use distinct facial movements when prompted with social contexts related to the theorized social function of each smile. Taken together, the present findings support the conclusion that reward, affiliation, and dominance smiles are mentally represented as distinct categories, bringing us one step closer to understanding smiles as nuanced social signals.