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Expectancy and fear ratings. A, Retrospective US expectancy ratings for the conditioning phase (left), and the reversal phase (right), averaged across blocks within these phases. B, Retrospective fear ratings for the conditioning phase (left) and the reversal phase (right), averaged across blocks within these phases. Ratings were made on a 9-point Likert scale. CS = conditions stimulus, CS– = safe stimulus, CS+I = merely instructed stimulus, CS+E = instructed and experienced stimulus.
