Fig. 2

Across both experiments, each trial followed a similar procedure. A 1000 ms fixation (+) was followed by a 2000 ms CS or GS. Participants then rated their US expectancy in response to the prompt, “Please guess the likelihood of receiving an evaluation.” Subsequently, a face, with or without a social evaluation, appeared for 3000 ms. The experiments differed in two primary ways. Experiment 1 featured a longer inter-trial interval (ITI) of 9000–12,000 ms, compared to 1500–5500 ms in Experiment 2. Furthermore, Experiment 2 uniquely required participants to provide retrospective negative emotion ratings for all stimuli at the conclusion of the acquisition and generalization phases.