Fig. 1
From: Unveiling why race does not affect the mask effect on attractiveness: but gender and expression do
Examples of the stimuli used in the experiment. The left images show the original images smiling (top image) and neutral (bottom image). The right images show the same faces with the medical mask obscuring the lower portion. During the experiment, images were presented individually and in a random order. The original images are reproduced with permission from the Chicago Face Database (Ma et al., 2015) with a Creative Commons Attribution 4.0 (CC BY 4.0) license