Figure 1.

Stimuli and construction of bias scores. Panel a. Sample whole (left) and occluded (right) facial images; occluded face stimuli contained less information than whole face stimuli. Panel b. Occluded bias scores were calculated by subtracting the whole from occluded rating for each face. Positive occluded bias trust scores indicate a tendency to find the occluded face more trustworthy; negative occluded bias threat scores indicated a face was less threatening in the occluded condition. Panel c. Composite occluded bias scores combined trust and threat occluded bias scores, subtracting threat bias scores from trust bias scores so that the two measures had the same directionality: faces with larger positive composite bias scores were more approachable (more trustworthy and less threatening) in the occluded condition.