Franklin, M. E., Abramowitz, J. S., Bux, D. A. Jr., Zoellner, L. A. & Feeny, N. C. (2002). Cognitive-behavioral therapy with and without medication in the treatment of obsessive-compulsive disorder. Professional Psychology - Research & Practice, 33(2), 162-168.

Mataix-Cols, D., Alonso, P., Hernandez, R., Deckersbach, T., Savage, C. R., Menchon, J. M. & Vallejo, J. (2003). Relation of neurological soft signs to nonverbal memory performance in obsessive-compulsive disorder. Journal of Clinical and Experimental Neuropsychology, 25(6), 842-851.

McLean, P. D., Whittal, M. L., Thordarson, D. S., Taylor, S., Sochting, I., Koch, W. J., Paterson, R. & Anderson, K. W. (2001). Cognitive versus behavior therapy in the group treatment of obsessive-compulsive disorder. Journal of Consulting & Clinical Psychology, 69(2), 205-214.

            In this study, two types of therapies are compared to see which is more effective in treating obsessive-compulsive disorder. The two therapies are: cognitive behavior therapy (CBT) and exposure and response prevention (ERP).
            The one thing I found interesting in this study is that although some participants were referred to by physicians, the rest were found via newspaper advertisements and other media resources. This is the first article I’ve come across where participants have been gathered in this manor. The participants were 18-65 and had to show at least one symptom for one year prior to entering this study.  
            This study found that ERP is slightly more effective than CBT by the end of treatment. They also asked their participants to follow-up 3 months post-therapy. The same result was found in the 3 months post-therapy as well: ERP is slightly more effective than CBT.