Fig. 2.

Results from analyses of standard outcome measures. a and b, Accuracy and reaction times in each block of instrumental learning. Both groups had learned the correct response to make (press left or right key) in the presence of each stimulus through trial and error. c, There were no significance differences in the number of continuous incorrect responses in each type of stimulus between patients with OCD and HCs. d, The results of outcome devalued stage. Patients with OCD showed significantly lower response rate to valuable outcomes, a significantly higher response rate to devalued outcomes. OCD, obsessive-compulsive disorder; HCs, healthy controls; **, p < 0.01; ***, p < 0.001.