Face Masks and Interpersonal Perceptions: Null Effects on Perceived Trust and Credibility

During the COVID-19 pandemic, many courtrooms implemented physical distancing protocols, including face-mask requirements for testifying witnesses. These precautions prompted debate among academics and practitioners about whether face coverings might impair jurors’ ability to assess a witness’s credibility. To examine this question, we conducted two experimental studies using simulated video-recorded testimony. We hypothesized that face masks would reduce perceived credibility as measured by ratings of trustworthiness and overall witness credibility. Across both studies, our results provided no evidence that face masks diminished perceptions of credibility or trust. These results suggest that, in such settings, face mask use may not significantly interfere with jurors’ interpersonal assessments. We discuss implications for future courtroom procedures should witnesses be required to wear a medical mask, either for public or personal health reasons.