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Additional research has uncovered that in as little as 75 milliseconds, participants are able to derive the average sex ratio of an ensemble of faces.<ref name=":5" /> Furthermore, within that 75 milliseconds, participants were able to form impressions based on the perceived sex ratio and make inferences about the group's perceived threat.<ref name=":5" /> Specifically, this research found that groups were judged as more threatening as the ratio of men to women increased.<ref name=":5" />
In 2023, researchers found that people can accurately gauge the average trustworthiness of multiple faces presented together, even at very brief exposure times (as short as 250 ms). The findings suggest that our brains efficiently extract a summary statistic of facial features from crowds, enabling quick social judgments that may influence behavior.<ref>{{Cite web |last=Dolan |first=Eric W. |date=2024-02-24 |title=Ensemble perception: Trust judgments of crowds of faces happen at the blink of an eye |url=https://www.psypost.org/ensemble-perception-trust-judgments-of-crowds-of-faces-happen-at-the-blink-of-an-eye/ |access-date=2024-02-29 |website=PsyPost - Psychology News |language=en-US}}</ref>
== References ==
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