Increased decision thresholds enhance information gathering performance in juvenile Obsessive-Compulsive Disorder (OCD)
Fig 4
Increased decision thresholds in patients with OCD.
The OCD group showed increased decision thresholds in both conditions. The model’s inherent decision threshold showed a distinction between the OCD group and controls (A). When using the model to simulate data, we again found a marked increase in decision threshold (as indicated by the mean evidence difference at choice at each stage) for OCD patients (B). Note the growing evidence difference for the first few draws increases because the magnitude of the difference in evidence is limited by the actual samples (e.g., the difference after 2 draws can be no more than 2). The increasing errorbars in the decreasing condition at later stages shows that even simulated agents rarely sample beyond the 15th step in this condition.