In this video Dr. Steven Phillipson presents innovative ideas relating to the purely obsessional form of Obsessive-Compulsive Disorder (OCD). In depth descriptions are given of this particular form of OCD. A conceptual model of how the disorder is maintained and reinforced within ones own mental framework is presented. Very specific treatment strategies are presented. The applications of Cognitive-Behavioral assignments are laid out in great detail. Critical concepts are discussed, such as, the focusing on the response to the aversive thought rather than attempting to eliminate the occurrence of the thought. The necessity of regularly practicing in home based assignments and creating a working hierarchy is expounded.