Further validation of the IDAS: Evidence of convergent, discriminant, criterion, and incremental validity.
Abstract
The authors explicated the validity of the Inventory of Depression and Anxiety Symptoms (IDAS; D. Watson et al., 2007) in 2 samples (306 college students and 605 psychiatric patients). The IDAS scales showed strong convergent validity in relation to parallel interview-based scores on the Clinician Rating version of the IDAS; the mean convergent correlations were .51 and .62 in the student and patient samples, respectively. With the exception of the Well-Being Scale, the scales also consistently demonstrated significant discriminant validity. Furthermore, the scales displayed substantial criterion validity in relation to Diagnostic and Statistical Manual of Mental Disorders (4th ed.; DSM-IV; American Psychiatric Association, 1994) mood and anxiety disorder diagnoses in the patient sample. The authors identified particularly clear and strong associations between (a) major depression and the IDAS General Depression, Dysphoria and Well-Being scales, (b) panic disorder and IDAS Panic, (c) posttraumatic stress disorder and IDAS Traumatic Intrusions, and (d) social phobia and IDAS Social Anxiety. Finally, in logistic regression analyses, the IDAS scales showed significant incremental validity in predicting several DSM-IV diagnoses when compared against the Beck Depression Inventory-II (A. T. Beck, R. A. Steer, & G. K. Brown, 1996) and the Beck Anxiety Inventory (A. T. Beck & R. A. Steer, 1990).
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The Inventory of Depression and Anxiety Symptoms shows strong convergent, discriminant, criterion, and incremental validity.
“The IDAS shows strong convergent, discriminant, criterion, and incremental validity (Watson et al., 2008).”
From Evaluating the role of mindfulness in terms of asthma-related outcomes and depression and anxiety symptoms among individuals with asthma. (2019) · cites this paper as Watson et al., 2008
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“The IDAS shows strong convergent, discriminant, criterion, and incremental validity (Watson et al., 2008).”
Background
- Authors
- Watson, D., O'Hara, M. W., Chmielewski, M., McDade-Montez, E. A., Koffel, E., Naragon, K., & Stuart, S.
- Affiliations
- University of Iowa (US)
- Venue
- Psychological Assessment
- Published
- 2008-09
- Volume
- 20
- Issue
- 3
- Pages
- 248-259
- ISSN
- 1040-3590 (ISSN-L)
- 1939-134X
- OpenAlex
- W2026447783
- Cited by
- 215
- References
- 8
- Citations by year
- 2026: 3 · 2025: 7 · 2024: 10 · 2023: 17 · 2022: 13 · 2021: 11 · 2020: 12 · 2019: 8 · 2018: 20 · 2017: 19 · 2016: 24 · 2015: 11 · 2014: 18 · 2013: 15 · 2012: 9
- FWCI
- 8.17
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Psychological Assessment (publishedVersion)
- PubMed (publishedVersion)
- Iowa Research Online (The University of Iowa) (submittedVersion)
- Funders
- National Institute of Mental Health (R01-MH068472)
- Topics
- Social Sciences › Psychology › Experimental and Cognitive Psychology › Anxiety, Depression, Psychometrics, Treatment, Cognitive Processes
- Social Sciences › Decision Sciences › Management Science and Operations Research › Psychometric Methodologies and Testing
- Social Sciences › Psychology › Applied Psychology › Psychological Testing and Assessment
- Keywords
- Ida, convergent validity, discriminant validity, criterion validity, incremental validity, depression, anxiety, panic disorder, post-traumatic stress disorder, social anxiety disorder, major depressive disorder, DSM-IV diagnosis, university students, psychiatric patients, Beck Depression Inventory-II, Beck Anxiety Inventory
- MeSH terms
- Adolescent, Adult, Aged, Aged, 80 and over, Anxiety Disorders, Major Depressive Disorder, Female, Humans, Male, Middle Aged, Psychiatric Status Rating Scales, Reproducibility of Results, Discriminant Analysis
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