Does Face Shape Affect First Impressions? What Research Says

A look at what psychology research actually shows about facial structure and snap judgments — and the important limits of that research.

What Studies on First Impressions Measure

A body of psychology research, notably work associated with Princeton researcher Alexander Todorov, has found that people form trait impressions (trustworthiness, competence, dominance) from faces within a fraction of a second, and that these snap judgments show reasonable consistency across different raters looking at the same face.

The Critical Caveat: Consistency Isn't Accuracy

Consistent snap judgments are not the same as accurate ones. The same body of research, and considerable follow-up work, has generally found weak or unreliable correlations between these instant facial impressions and a person's actual measured traits — people agree with each other about a face's apparent trustworthiness far more than that apparent trustworthiness predicts anything real about the person.

Where Jaw and Brow Structure Specifically Come In

Some studies link stronger jaw and brow structure to snap judgments of dominance specifically (not trustworthiness or competence generally), which is a narrower and more consistently replicated finding than broader claims about face shape predicting character.

The Responsible Way to Read This Research

This research describes a real, documented bias in how humans form snap judgments — it does not validate that bias as accurate, and it should not be read as license to draw conclusions about anyone's character from their face shape. If anything, understanding that this bias exists is most useful as a reason to consciously override snap judgments rather than trust them.