“…Like other anxiety disorders, a CBT approach to treatment of obsessions and compulsions that includes a strong CR component does lead to significant immediate and long-term symptom reduction (e.g., Freeston et al, 1997;McLean et al, 2001;van Oppen et al, 1995;Whittal, Robichaud, Thordarson, & McLean, 2008;Whittal, Thordarson, & McLean, 2005). Furthermore, it is apparent that CR alone can have a significant treatment effect even in the absence of systematic, intensive ERP (Cottraux et al, 2001;Whittal et al, 2005;Wilson & Chambless, 2005). Although some studies have found CBT equivalent to ERP (Cottraux et al, 2001;Whittal et al, 2005), others reported that intensive ERP alone is more effective than CBT (McLean et al, 2001) or that adding CR to ERP did not significantly improve treatment outcome (O'Connor et al, 2005).…”