Trust is a cornerstone of social interactions, guiding our judgments and behaviors in society. Research has shown that we form impressions of trustworthiness from faces in mere moments, but these assessments are made in isolation. New research published in Cognition expands this understanding by exploring how we perceive trustworthiness not just in individual faces but in crowds, revealing our capacity to quickly gauge the average trustworthiness of multiple faces together. Previous studies have largely focused on the trustworthiness of individual faces, neglecting how we process faces in grou…