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Attentional Biases to Facial Emotions392unveil potential features significantly predicting category membership. Significant features could not be found for any of the available feature spaces (Fourier magnitudes, Fourier phases, HOGs, colour distributions and pixel intensities. The dot-probe task was programmed in E-Prime 2.0 and conducted on an Iiyama T1931SR B1 touchscreen (38 x 30 cm). A trial was initiated by tapping on a black dot (%u00d8 6 cm) in the centre of the screen. Immediately afterwards, two pictures appeared (each 11 x 15 cm), one on the left side (7 cm from the left edge) and one on the right side (31 cm from the left edge) of the screen. Apart from the baseline trials in which only neutral stimuli were presented, one picture contained a neutral expression and the other picture contained an emotional expression of the same identity. After 300 ms (according to the recommendation by van Rooijen et al., 2017), one of the pictures was replaced by a black dot (%u00d8 6 cm) which the participant had to tap on as fast as possible. In line with the existing dot-probe terminology, a trial was labelled as congruent when an emotional (i.e., target) expression was replaced by the dot, whereas the replacement of a neutral expression was regarded as an %u2018incongruent%u2019 trial. The participant%u2019s reaction time to this second dot was measured in each trial as the variable of interest. After participants successfully reacted to the second dot, the screen turned blank (grey) for 2 s after which the start dot of the next trial appeared (see Figure 1). For each emotion category (angry, happy, fearful, sad) paired with a neutral stimulus, the dot could appear in the congruent or incongruent location, resulting in eight potential combinations. Each of the combinations was presented using each of the six stimulus identities and with the emotional stimulus in either the left or right location. Further, participants completed 12 trials in which two neutral stimuli were shown after which, due to a coding error, the dot always replaced the left stimulus. Thus, every participant had to complete 108 trials in total (8 x 6 x 2 + 12).ProcedureAfter signing the informed consent form, participants received written instructions on how to perform the dot-probe task on the touchscreen. They then completed eight practice trials with flower pictures as stimuli. Due to the self-initiation of each trial by tapping on the start dot, participants could go through the experiment in a self-paced manner and take breaks whenever necessary. After performing the task (duration around 7 min), participants completed the clinical trait questionnaires and were debriefed.