We make snap judgments of others based not only on their facial appearance, but also on our pre-existing beliefs about how others’ personalities work, finds a new study. People form personality impressions from others’ facial appearance within only a few hundred milliseconds.

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We make snap judgments of others based not only on their facial appearance, but also on our pre-existing beliefs about how others’ personalities work, finds a new study. People form personality impressions from others’ facial appearance within only a few hundred milliseconds.