Development and Psychometric Evaluation of the Children's Yale-Brown Obsessive-Compulsive Scale Second Edition

J Am Acad Child Adolesc Psychiatry. 2019 Jan;58(1):92-98. doi: 10.1016/j.jaac.2018.05.029. Epub 2018 Oct 25.


Objective: To develop and examine the psychometric properties of the Children's Yale-Brown Obsessive-Compulsive Scale Second Edition (CY-BOCS-II) in children and adolescents with obsessive-compulsive disorder (OCD).

Method: Youth with OCD (N = 102; age range 7-17 years), who were seeking treatment from 1 of 2 specialty OCD treatment centers, participated in the study. The CY-BOCS-II was administered at an initial assessment, and measures of OCD symptom severity, anxiety and depressive symptoms, behavioral and emotional problems, and global functioning were administered. Inter-rater and test-retest reliabilities were assessed on a subsample of participants (n = 50 and n = 31, respectively) approximately 1 week after intial assessment.

Results: The CY-BOCS-II demonstrated moderate-to-strong internal consistency (α = 0.75-0.88) and excellent inter-rater (intraclass correlation coefficient = 0.86-0.92) and test-retest (intraclass correlation coefficient = 0.95-0.98) reliabilities across all scales. Construct validity was supported by strong correlations with clinician-rated measures of OCD symptom severity and moderate correlations with measures of anxiety symptoms. Exploratory factor analysis showed a 2-factor structure, which was generally inconsistent with its adult counterpart, the Yale-Brown Obsessive-Compulsive Scale Second Edition.

Conclusion: Initial findings support the CY-BOCS-II as a reliable and valid measure of obsessive-compulsive symptoms in youth.

Keywords: Children’s Yale-Brown Obsessive-Compulsive Scale; assessment; obsessive-compulsive disorder; treatment; validity.

Publication types

  • Evaluation Study
  • Research Support, N.I.H., Extramural

MeSH terms

  • Adolescent
  • Child
  • Humans
  • Obsessive-Compulsive Disorder / diagnosis*
  • Psychiatric Status Rating Scales / standards*
  • Psychometrics / instrumentation
  • Psychometrics / methods
  • Psychometrics / standards*
  • Reproducibility of Results