Habit Reversal Versus Object Manipulation Training for Treating Nail Biting: A Randomized Controlled Clinical Trial

Objective:This is a parallel, three group, randomized, controlled clinical trial, with outcomes evaluated up to three months after randomization for children and adolescents with chronic nail biting. The current study investigates the efficacy of habit reversal training (HRT) and compares its effect with object manipulation training (OMT) considering the limitations of the current literature .Method:Ninety one children and adolescents with nail biting were randomly allocated to one of the three groups. The three groups were HRT (n=30), OMT (n=30), and wait-list or control group (n=31). The mean length of nail was considered as the main outcome .Results:The mean length of the nails after one month in HRT and OMT groups increased compared to the waiting list group (P