Picture viewing task
WORMS
The participants viewed 30 disgusting and 30 neutral images. The disgust pictures depicted core disgust elicitors (e.g., disgusting animals such as snails and worms, rotten food, and body secretions) and were taken from the International Affective Picture SystemThe pictures were presented within blocks of three pictures of the same type (10 disgust blocks, 10 neutral blocks). The sequence of blocks was randomized, with the only restriction that a maximum of two blocks of the same type could be shown consecutively. Within a block, the pictures were presented for 5 s each. Then, a fixation cross appeared for a variable interval (2–4 s), which was followed by a rating for experienced disgust (“How strong was your experienced disgust?”) on a scale ranging from 1 to 9 (very strong). Participants gave the rating verbally using the intercom system. The picture presentation only continued when the rating was completed. Before the next block started, a fixation cross was presented for 15 s (indicating a resting period).