The aim of the current study was to examine the association between age at symptom onset and action cancelation in adults with obsessive-compulsive disorder (OCD). Performance on the stop-signal task was compared among adult patients with early-onset OCD (n = 63, onset age ≤ 19), late-onset OCD (n = 33, onset age ≥ 20), and healthy controls (n = 51). Stop-signal reaction time (SSRT) was significantly longer in both OCD groups compared to the control group. However, no significant differences were found between the two OCD groups. In addition,...
