THE IMPACT OF NEUROPSYCHOLOGICAL FUNCTIONING ON TREATMENT OUTCOME IN PEDIATRIC OBSESSIVE-COMPULSIVE DISORDER

Background: Scant research has examined the effect of neuropsychological (NP) functioning on treatment outcome in pediatric obsessive-compulsive disorder (OCD). This study sought to address this gap in existing research. Methods: A total of 63 youths were included in this study and asked to complete the Rey-Osterrieth Complex Figure (ROCF) and specific subtests of the Wechsler Intelligence Scale for Children, Third Edition (WISC-III). Results: Analyses suggest that 5 min recall accuracy (raw score) and percent recall from the ROCF, assessed before treatment may be predictors of treatment response among children with OCD. What is more, exploratory post hoc analyses indicated that performance on these ROCF tasks is particularly relevant among youths receiving cognitive-behavior therapy (CBT) alone. These results may be driven by executive functioning ability. Additional analyses suggest a relationship between age, symptom severity, and NP functioning on select tasks from both the ROCF and WISC-III. Conclusions: Although alternative explanations exist, these findings suggest that poorer performance on the ROCF and, in turn, poorer response to treatment, particularly among those youths receiving CBT alone, may be due to executive functioning difficulties. Clinicians and researchers should be sensitive to this fact and may warrant modification(s) to existing treatment protocols. Limitations to this study, however; suggest the need for replication and extension of these findings in the future. Depression and Anxiety 27:365-371, 2010. (C) 2009 Wiley-Lisy, Inc.