ERIC Number: EJ804582
Record Type: Journal
Publication Date: 2008
Abstractor: As Provided
Reference Count: 30
The Factor Structure and Dimensional Scoring of the Generalized Anxiety Disorder Questionnaire for "DSM-IV"
Rodebaugh, Thomas L.; Holaway, Robert M.; Heimberg, Richard G.
Assessment, v15 n3 p343-350 2008
Despite favorable psychometric properties, the Generalized Anxiety Disorder Questionnaire for the "Diagnostic and Statistical Manual of Mental Disorders" (4th ed.) (GAD-Q-IV) does not have a known factor structure, which calls into question use of its original weighted scoring system (usually referred to as the dimensional score). Analyses appropriate to categorical item responses in a large sample of undergraduates were used to establish the scale's factor structure. Analyses indicated that a one-factor structure resulted in good fit. A scoring method based on this one-factor structure was compared with a variety of alternative scoring procedures, and it was found that a method based on factor scores did relatively well but that the previously suggested dimensional score failed to perform better than a simple sum of items. Results support the general unity of the measure but raise doubts regarding its scoring and response options. (Contains 2 tables and 2 notes.)
Descriptors: Mental Disorders, Factor Structure, Measures (Individuals), Scoring, Factor Analysis, Weighted Scores, Psychometrics, Anxiety, Clinical Diagnosis, Goodness of Fit, Evaluation Methods, Undergraduate Students, Test Items, Severity (of Disability), Symptoms (Individual Disorders)
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Publication Type: Journal Articles; Reports - Evaluative
Education Level: N/A
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Identifiers - Location: Pennsylvania