This study will evaluate the effects of a computerized training program coupled with cognitive behavioral therapy (CBT) for OCD.

This study will evaluate the effectiveness of a computerized training program (called Personalized Computerized Inhibitory Training, or PCIT) coupled with cognitive behavioral therapies (CBT) consisting of Exposures and Response Prevention in treating obsessive compulsive disorder (OCD) in patients who previously underwent CBT, but still have residual symptoms.

Inclusion Criteria:

• Principal diagnosis of OCD (assessed by SCID).
• Clinically significant OCD symptoms (Y-BOCS score of at least 14).
• Allowed to be on medications if they have been on a stable dose for at least 12 weeks prior to the study and will remain on a stable dose during this study.
• Have access to a computer or laptop.

Exclusion Criteria:

• Individuals with the following disorders will excluded: bipolar, psychosis, current major depressive disorder (assessed by SCID).
• Patients with head injury and loss of consciousness of more than five minutes or a neurological condition affecting the central nervous system.
• Patients taking a psychiatric medication will be asked to maintain a stable dose for 6 weeks prior to study entry.
• Patients with a history of more than 8 hours of therapist-assisted ERP for OCD in the past 6 months,
• Vision or hearing loss (although individuals with vision corrected by glasses or contacts will not be excluded).
• Active suicidality warranting immediate clinical care.