Preliminary Reliability and Validity of the Generalized Anxiety Disorder Questionnaire - IV: A Revised Self-Report Diagnostic Measure of Generalized Anxiety Disorder

Newman, M. G., Zuellig, A. R., Kachin, K. E., Constantino, M. J., Przeworski, A., Erickson, T. M., & Cashman-McGrath, L. (2002). Preliminary reliability and validity of the Generalized Anxiety Disorder Questionnaire-IV. Behavior Therapy, 33(2), 215-233. doi:10.1016/S0005-7894(02)80026-0

19 Pages Posted: 28 Jan 2015 Last revised: 8 May 2019

See all articles by Michelle G. Newman

Michelle G. Newman

Pennsylvania State University - Department of Psychology

Andrea Zuellig

Melrose Center

Kevin Kachin

Retrofit

Micheal Constantino

University of Massachusetts, Amherst

Amy Przeworski

Case Western Reserve University - Department of Psychiatry

Thane M. Erickson

Seattle Pacific University - Department of Psychology

Laurie Cashman-McGrath

Pennsylvania State University

Date Written: 2002

Abstract

This study examined the Generalized Anxiety Disorder Questionnaire-IV (GAD-Q-IV), a revised self-report diagnostic measure of generalized anxiety disorder (GAD) based on the 4th edition of the Diagnostic and Statistical Manual. Subjects were undergraduates (aged 17-41 yrs). GAD-Q-IV diagnoses were compared to structured interview diagnoses of individuals with GAD, social phobia, panic disorder, and nonanxious controls. Using Receiver Operating Characteristics analyses, the GAD-Q-IV showed 89% specificity and 83% sensitivity. The GAD-Q-IV also demonstrated test-retest reliability, convergent and discriminant validity, and kappa agreement of .67 with a structured interview. Students diagnosed with GAD by the GAD-Q-IV were not significantly different on 2 measures than a GAD community sample, but both groups had significantly higher scores than students identified as not meeting criteria for GAD, demonstrating clinical validity of the GAD-Q-IV.

Keywords: Generalized Anxiety Disorder Questionnaire IV; reliability; validity; generalized anxiety disorder; self diagnosis; college students

Suggested Citation

Newman, Michelle G. and Zuellig, Andrea and Kachin, Kevin and Constantino, Micheal and Przeworski, Amy and Erickson, Thane M. and Cashman-McGrath, Laurie, Preliminary Reliability and Validity of the Generalized Anxiety Disorder Questionnaire - IV: A Revised Self-Report Diagnostic Measure of Generalized Anxiety Disorder (2002). Newman, M. G., Zuellig, A. R., Kachin, K. E., Constantino, M. J., Przeworski, A., Erickson, T. M., & Cashman-McGrath, L. (2002). Preliminary reliability and validity of the Generalized Anxiety Disorder Questionnaire-IV. Behavior Therapy, 33(2), 215-233. doi:10.1016/S0005-7894(02)80026-0, Available at SSRN: https://ssrn.com/abstract=2555938

Michelle G. Newman (Contact Author)

Pennsylvania State University - Department of Psychology ( email )

University Park, PA
United States

Andrea Zuellig

Melrose Center ( email )

St. Louis Park, MN
United States

Kevin Kachin

Retrofit

University Park
State College, PA 16802
United States

Micheal Constantino

University of Massachusetts, Amherst ( email )

Department of Operations and Information Managemen
Amherst, MA 01003
United States

Amy Przeworski

Case Western Reserve University - Department of Psychiatry ( email )

Cleveland, OH 44106
United States

Thane M. Erickson

Seattle Pacific University - Department of Psychology ( email )

Seattle, WA 98119
United States

Laurie Cashman-McGrath

Pennsylvania State University

University Park
State College, PA 16802
United States

Do you have negative results from your research you’d like to share?

Paper statistics

Downloads
166
Abstract Views
1,417
Rank
324,242
PlumX Metrics