<qa>  What is the gold standard?This is a sample made up of ninety-six adult individuals of both sexes to be divided into three groups: the experimental group of thirty-two patients with OCD who will be undergone Trial-Based Cognitive Therapy; the gold standard, with thirty-two people with OCD subject Exposure and Response Prevention and the control group of thirty-two healthy individuals. Interviews and therapeutic intervention occur in private practices researchers or medical schools accredited by UESPI. 