Figure 2.

Stimulus sequence for the empathy for pain experiment. In wave 2, timing was optimized to reduce uncertainty about the contribution of anticipation to observed responses. Shown here are stimuli for a low-intensity shock to the participant. In half of the trials, the fixation cross was followed instead by a rest event of 5.5 s. In wave 2, fixation crosses after rest events were jittered not between 2.5 and 6.5 s but between 1 and 5 s, to save time. Rating questions were presented in Swedish, but are shown here translated to English.