How to treat the untreated: effectiveness of a self-help metacognitive training program (myMCT) for obsessive-compulsive disorder

Despite advances in the understanding and treatment of obsessive-compulsive disorder (OCD), many patients undergoing interventions display incomplete symptom reduction, Our research group has developed a self-help manual entitled "My Metacognitive Training for OCD" (myMCT) aimed at raising patients' awareness about cognitive biases that seem to subserve OCD. The training is particularly intended for patients currently unable or unwilling to attend standard therapy, or in cases where such a treatment option is not available. For the present study, 86 individuals suffering from OCD were recruited over the Internet. Following the initial assessment, participants were either immediately emailed the myMCT manual or allocated to a waitlist group. After 4 weeks, a second assessment was performed, The myMCT group showed significantly greater improvement for OCD symptoms according to the Y-BOCS total score compared with the waitlist group (d = .63), particularly for obsessions (d= .69). Medium to strong differences emerged for the OCI-R (d = .70) and the BDI-SF (d = .50). The investigation provides the first evidence for the effectiveness of the myMCT for OCD.