Trichotillomania (hair pulling disorder, HPD) is characterized by significant 
psychological distress, childhood-onset, and, in adults, certain cognitive 
deficits such as inhibitory control. A total absence of such literature exists 
within pediatric HPD samples, including research investigating neurocognitive 
aspects of disparate pulling-styles. The present study aims to address these 
gaps in the literature. Youth with HPD and healthy controls (N = 45) were 
compared on an automated neurocognitive task--stop-signal task (SST)--assessing 
inhibitory control. Youth with HPD (n = 17), controlling for age and attention 
issues, were found to perform better on the stop-signal reaction time compared 
to controls (n = 28). No significant relationships between performance on the 
SST and HPD severity, distress/impairment, or pulling-styles were noted. 
Findings from the current study suggest that children with HPD may not exhibit 
deficits in motor inhibition as compared to controls when the effects of age and 
attentional problems are controlled.