Fig 1. Mean and standard error for happiness and trustworthiness ratings of neutral and calm facial expressions a) sample 1, b) sample 2, c) separated for the sex of the participants and the facial stimuli (pooled for sample 1 and sample 2).

Please note: Fig 1a and 1b: *** indicates p < .001 for the main effects of ‘emotion’ and ‘task’, xxx indicates p < .001 for the interaction effect; Fig 1c: *** indicates p < .001 for the interaction effects of ‘sex-stim’ * ‘emotion’, xxx indicates significant differences between pairwise comparisons with p < .001 for the interaction effect ‘sex * sex-stim * task’.