Face processing
Can we sense familiarity in faces covered by masks or sunglasses?
Open access · cc by · source: Europe PMC
People can still sense if a face is familiar even when surgical masks or sunglasses make it impossible to identify who the person is.
Key findings
Surgical masks dramatically reduced face identification, as participants only identified 38% of known celebrities when they were masked in the initial study. In the follow-up study, participants identified only 28% of known faces when wearing surgical masks, and only 16% when wearing sunglasses. Despite these identification failures, participants still rated masked famous faces as more familiar than masked non-famous faces.
Methodology
In the initial study, researchers showed 54 online participants images of famous and non-famous faces obscured by a hood and a surgical mask. Participants rated how familiar each face felt and then tried to identify the person, followed by a subsequent phase where they identified the unmasked faces. A follow-up study with 112 college students compared these surgical masks to sunglasses.
Limitations
The study relied on older celebrity images, which many participants struggled to recognize even when completely unmasked. Additionally, because the study did not gather demographic data, it cannot determine if factors like race, age, or gender affect this familiarity detection. Finally, the research used artificial, digital face overlays and a black hood, which may not fully replicate how we encounter masked or sunglass-wearing people in the real world.
How this study connects
Role on claims
Each row is a claim on a concept or method page where this paper supports, challenges, or qualifies the statement. Roles are hand-checked — not a model guess.
The visual system can successfully extract a sense of familiarity from a face even when major features are covered by surgical masks or sunglasses, rendering conscious identification impossible.
Evidence for the claim as stated.
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