| 20-HG-0147 | An Observational Study of the Developing Brain, Impulsivity and Compulsivity | Participants currently recruited/enrolled | 6-80 Years | NIMH | obsessive | 89-M-0006 | Brain Imaging of Childhood Onset Psychiatric Disorders, Endocrine Disorders and Healthy Volunteers | Participants currently recruited/enrolled | 3-120 Years | NIMH | obsessive |