Fig. 4.

The relationship between parameters in instrumental learning, performance in the outcome stage, and compulsive severity in patients with OCD, was analyzed with verbal IQ and medication status as covariates. a, the mean learning rate exhibited a positive correlation with the rate of response to valuable outcomes. b, the reinforcement sensitivity parameter exhibited a significant negative correlation with the rate of response to devalued outcomes. c, reinforcement sensitivity parameter exhibited a significant positive correlation with the index of devaluation sensitivity (DSI). d, the perseveration showed a significant negative correlation with the rate of response to devalued outcomes. e, perseveration showed significant negative correlations between Y-BOCS compulsive scores. f, mean of all type of learning rate showed significant negative correlations between Y-BOCS compulsive scores. OCD, obsessive-compulsive disorder; HCs, healthy controls.