Is facial width-to-height ratio reliably associated with social inferences? A large cross-national examination

Previous research suggests that facial width-to-height ratio (fWHR) may be associated with behavioral tendencies and social judgments. Mounting evidence against behavioral links, however, has led some researchers to invoke evolutionary mismatch to explain fWHR-based inferences. To examine whether such an explanation is needed, we leveraged a large cross-national dataset containing ratings of 120 faces on 13 fundamental social traits by raters across 11 world regions (N = 11,481). In the results of our preregistered analyses, we found mixed evidence for fWHR-based social judgments. Men’s fWHR was not reliably linked to raters’ judgments for any of the 13 trait inferences. In contrast, women’s fWHR was reliably negatively associated with raters’ judgments of how dominant, trustworthy, sociable, emotionally stable, responsible, confident, attractive, and intelligent women appeared, and positively associated with how weird women appeared. Because these findings do not follow from assumptions and theory guiding fWHR research, the underlying theoretical framework may need revising.