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Speaking of Psychology · September 3, 2025 · 36m
The Science of First Impressions: How Your Brain Judges Others in Milliseconds
University of Toronto psychologist Nicholas Rule discusses how the brain forms judgments about other people in milliseconds — before conscious awareness. How accurate these snap judgments are, how they're shaped by stereotypes, and why they're so resistant to change.
This summary was generated from show notes and public descriptions, not from a full transcript review. Details may contain inaccuracies.
Highlights
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The brain forms social judgments in 100 milliseconds — before conscious processing has begun
Rule: facial evaluation research shows that the brain forms judgments about trustworthiness, competence, and likability within 100 milliseconds of seeing a face — faster than conscious awareness. These automatic evaluations influence subsequent behavior even when people are unaware of them.•
First impressions are partially accurate and partially stereotype-driven — the challenge is separating the two
Rule: snap judgments are better than chance at detecting certain traits (extraversion, sexual orientation, political affiliation) but also incorporate stereotypes about race, gender, age, and attractiveness. The accuracy and the bias are inseparable in the automatic system.Was this useful?