Development of the Clark and Becker Scale of Symptomatology (CBS): Symptom-Level Item Performance

Depression and anxiety are common, often comorbid, mental disorders. Many researchers have developed efficient self- and clinician-report measures of depression and anxiety. Most of these existing measures of depression and anxiety measures yield overall or specific subscale scores. The Clark and Becker Scale of Symptomatology (CBS) was designed to measure individual symptoms of depression and anxiety. It utilizes a different type of bipolar scaling to aid in accurate symptom endorsement. Unlike other pre-existing measures, the CBS is designed to be interpreted at the symptom level. The CBS was administered to a nationally representative sample (<em>n</em> = 530). Concurrent validity of the CBS was supported through correlations with the IDAS-II subscales. The CBS analyzed with item response theory. The depression and anxiety symptoms yielded high test and item information values which is indicative of high reliability. The Cronbach’s alphas for the CBS depression and anxiety symptoms were sufficient for research purposes (α = 0.883 and α = 0.909 respectively). The CBS is a valid and reliable measure of depression and anxiety.

Name thesis:degree_name

Master of Science (MS)

Discipline thesis:degree_discipline

Experimental Psychology

Year dc:date.available

2018

Author dc:creator

• Clark, Michael

Contributors dc:contributor

• Susan Lonborg
• Terrence J. Schwartz
• Kara Gabriel

• Tests and Measurements
• Mental Health
• Item Response Theory
• Clinical Psychology
• Mental Disorders
• Quantitative Psychology

Language dc:language

English

Repository record dc:identifier

https://digitalcommons.cwu.edu/etd/932

OAI identifier oai:identifier

oai:digitalcommons.cwu.edu:etd-1945