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Methodology

How does RealSmile compare to peer-reviewed face research?

The 17-metric engine measures facial features that published face-perception research studies, not a vibe. The findings below are the research the engine and the reports draw on.

• Willis & Todorov (2006) — judgments made after a 100 ms look correlate highly with judgments made with no time limit; more time mainly raises confidence. PMID 16866745.
• Penton-Voak et al. (2001) — symmetric male faces were rated more attractive, but were not reliably more masculine. PMID 11487409.
• Rhodes (2006) — a critical review and meta-analyses find averageness, symmetry, and sexual dimorphism attractive in both male and female faces and across cultures. PMID 16318594.
• Ekman (1992) — argues that each basic emotion has its own signal, physiology and triggering events. The audit reads expression from each photo in words; it is not a scored metric.
• Hamermesh (2011) — Beauty Pays (Princeton University Press) shows better-looking workers are more likely to be employed and earn more, with the premium differing by gender and by profession.

See the full citation list and per-metric reliability on the research base.

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