eLife assessment
This important work addresses the relationship between the transdiagnostic compulsivity dimension and confidence as well as confidence-related behaviours like reminder setting. The relationship between confidence and compulsive disorders has recently received a lot of attention and has been considered to be a key cognitive change. The authors paired an elegant experimental design and pre-registration to give convincing evidence of the relationship between compulsivity, reminder setting, and confidence. Future work should clarify the link of their findings with prediction error-related processes to test whether they could be causally related to their results, and further clarify some of the implications for their findings and refine hypotheses about confidence-related cognitive changes with compulsivity and OCD.