The document outlines a brief about the case study of Bess, a 27-year-old woman with OCD, emphasizing the applicability of the cognitive behavioral approach in clinical psychology. It details Bess's background, her struggles with perfectionism and intrusive thoughts, and her experience with cognitive behavioral therapy that involved exposure techniques and learning to control her thoughts. The document highlights the role of a therapist in facilitating this intervention and the focus on psychological factors underlying OCD.