Cognitive Assessment Instrument of Obsessions and Compulsions (CAIOC-13) - a new 13-item scale for evaluating functional impairment associated with OCD.
The Cognitive Assessment Instrument of Obsessions and Compulsions (CAIOC) was designed as a novel instrument for clinicians to assess the main cognitive and executive impairments that are hypothesized to underpin the impact of obsessive-compulsive symptoms on functioning in patients with obsessive-compulsive disorder (OCD). Initially, 18 items were selected based upon observation in the laboratory and clinical research setting, then refined to a definitive 13-item scale after excluding items due to statistical criteria. In a study involving two raters, 50 patients diagnosed with OCD were assessed using the self-rated and clinician-rated versions of the new scale. OCD patients' scores fell in the region of moderate severity on both clinician and self-rated versions of the CAIOC-13. Inter-rater reliability and Cronbach's alpha scores were satisfactory. Factor analysis indicated a one factor solution confirming its unidimensionality. Significantly higher scores in the OCD group compared to a depression group (n=31) and a healthy control group (n=55) were revealed. Scores on the clinician and self-rated versions of the 13-item CAIOC appear valid and reliable measures of the severity of functional impairment associated with OCD. Further validation, including research into the relationship of the CAIOC-13 with laboratory measures of cognitive impairment and evaluation of its sensitivity is indicated.
Department of Psychology, University of Hertfordshire, Hatfield, AL10 9AB, UK. winand.dittrich@kgu.de
Winand H
WH
Dittrich
Thomas
T
Johansen
Naomi A
NA
Fineberg
D000293:Adolescent; D000328:Adult; D000368:Aged; D019540:Area Under Curve; D003072:Cognition Disorders / Q000175:diagnosis* / Q000209:etiology*; D003192:Compulsive Behavior / Q000150:complications*; D005163:Factor Analysis, Statistical; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009483:Neuropsychological Tests; D009770:Obsessive Behavior / Q000150:complications*; D009771:Obsessive-Compulsive Disorder / Q000150:complications* / Q000523:psychology; D010555:Personality Inventory; D011569:Psychiatric Status Rating Scales; D011594:Psychometrics; D012372:ROC Curve; D055815:Young Adult