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Yale-Brown Obsessive Compulsive Scale
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About Scale Name
Scale Name
Yale-Brown Obsessive Compulsive Scale
Author Details
Wayne Goodman
Translation Availability
Spanish, French, Chinese, and Japanese, among others
Background/Description
The Y-BOCS consists of two main parts: an interview with the patient to assess the nature and severity of obsessions and compulsions, and a clinician-administered rating scale. The interview portion includes questions about the patient’s OCD symptoms, including their frequency, duration, and impact on daily functioning. The rating scale portion assesses the severity of the patient’s obsessions and compulsions on a scale from 0 to 4, with higher scores indicating greater severity.
The second edition of the Y-BOCS includes updates to the original scale, including revisions to the wording of questions and rating scale items to make them clearer and easier to understand. It also includes additional items to assess the impact of OCD on quality of life, as well as a new subscale for assessing insight, or the patient’s awareness of the irrationality of their OCD symptoms.
Scoring, Administration and Interpretation
The Y-BOCS is usually administered by a trained mental health professional or researcher who has experience with the scale. The interview component of the Y-BOCS assesses the presence and severity of obsessions and compulsions, while the self-report questionnaire asks about the level of distress caused by these symptoms.
The Y-BOCS is scored on a scale ranging from 0 to 40, with higher scores indicating greater severity of OCD symptoms. The interview component of the Y-BOCS generates a total score that reflects the overall severity of OCD symptoms, as well as separate scores for obsessions and compulsions. The self-report questionnaire generates a single score that reflects the level of distress caused by OCD symptoms.
The interpretation of Y-BOCS scores depends on the context in which it is used. In research studies, Y-BOCS scores may be used to compare the effectiveness of different treatments or to evaluate the severity of OCD symptoms in different populations. In clinical settings, Y-BOCS scores may be used to guide treatment decisions and to monitor changes in symptoms over time. A score of 0-7 indicates subclinical symptom severity, 8-15 mild, 16-23 moderate, 24-31 severe, and 32-40 extreme severity.
Reliability and Validity
The Y-BOCS has been found to have high internal consistency, which means that the items on the scale are highly correlated with each other, and produce consistent results across different raters and testing occasions. This scale has been found to have high internal consistency, with Cronbach’s alpha coefficients ranging from 0.73 to 0.93 in various studies.
The Y-BOCS has been found to have good convergent validity, which means that its scores are strongly related to other measures of OCD symptom severity. It also has good discriminant validity, which means that it can distinguish between individuals with OCD and those without OCD, and is not strongly influenced by other mental health conditions.
Available Versions
The Yale-Brown Obsessive Compulsive Scale (Y-BOCS) has two versions: the interview version and the self-report version.
Reference
Storch, E. A., Abramowitz, J. S., Goodman, W. K., & Bagby, R. M. (2020). The Yale-Brown Obsessive Compulsive Scale: Second edition. Springer International Publishing. https://doi.org/10.1007/978-3-030-33815-3
Important Link
Scale File:
Frequently Asked Questions
What is the purpose of the Y-BOCS?
The Y-BOCS is a measurement instrument used to assess the severity of obsessive-compulsive disorder (OCD) symptoms. It can be used in research studies and clinical settings to evaluate the effectiveness of treatments and to monitor changes in symptoms over time.
How is the Y-BOCS administered?
The Y-BOCS can be administered in two formats: an interview version and a self-report version. The interview version is typically administered by a trained clinician or researcher, while the self-report version is completed by the individual with OCD.
How is the Y-BOCS scored?
The Y-BOCS is scored on a scale ranging from 0 to 40, with higher scores indicating greater severity of OCD symptoms. The interview version generates separate scores for obsessions and compulsions, as well as a total score that reflects overall symptom severity. The self-report version generates a single score that reflects the level of distress caused by OCD symptoms.
Is the Y-BOCS available in different languages?
Yes, the Y-BOCS has been translated into several languages, including Spanish, French, Chinese, and Japanese, among others. However, caution should be taken when using translated versions, as cultural differences may affect the interpretation of the items.
Is the Y-BOCS a valid and reliable measure of OCD symptoms?
Yes, the Y-BOCS has been extensively studied and is considered to be a valid and reliable measure of OCD symptom severity. It has demonstrated high internal consistency and good convergent and discriminant validity in various studies.
Special Thanks
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