There was an effect of picture emotion on RT for the gender (F(1, 95) = 9.78, p = 0.0001) and emotion (F(1, 95) = 54.2, p < 0.001) tasks. Participants were fastest to happy and neutral stimuli in the gender task, the mean RTs of which were highly similar, and slowest to sad stimuli. In the emotion task, RTs to happy stimuli were more than 100 ms faster than to either neutral or sad stimuli, which were similar (Figure 4).
