Obsessive-compulsive disorder, or OCD, affects 1 in 200 children, and is characterized by unwanted, distressing and repeated thoughts that lead to compulsive actions. Children and adults suffering from OCD usually hold the false notion that rituals reduce anxiety and distressing thoughts, and this belief inevitably results in a pattern of repetitive negative reinforcement. The most effective interventions often focus on breaking this pattern, and in this video, Dr. Eric A. Storch illustrates this aspect of the approach with a vivid application of exposure and response prevention. The...