Psychological reports
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Psychological reports · Aug 2019
Depression, Anxiety, and Stress: How Should Clinicians Interpret the Total and Subscale Scores of the 21-Item Depression, Anxiety, and Stress Scales?
The 21-item Depression, Anxiety, and Stress Scales (DASS-21) is a self-report measure that is easy to administer, quick to score, and is freely available. Widely used in diverse settings and populations, confirmatory factor analytic evidence has accumulated for a bifactor model underlying this multidimensional measure. Studies employing an exploratory bifactor approach to more closely examine its underlying structure and inter-relations of factors, however, have been scarce. ⋯ Based on several large samples of undergraduate students in the United States, the first two parts of the paper (Studies 1 and 2) utilized both exploratory (M = 19.7 years of age) and confirmatory factor analytic methods (M = 19.7 years of age) following those presented by contemporary multidimensional modeling theorists. Building upon these results, the third part of the paper (Study 3; M = 20.0 years of age) examined sensitivity-/specificity-related indices to provide cut-off score recommendations for a revised DASS-21 instrument based on a newly identified and supported bifactor structure. Implications of these results are discussed in terms of taxonomy, challenges inherent in multidimensional modeling, and potential use of the revised DASS-21 measure as a component of an actuarial decision-making strategy to inform clinical referrals.