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Accepted manuscript
Further validation of the IDAS: Evidence of Convergent, Discriminant, Criterion, and Incremental Validity
2008
DOI: 10.17077/3yjk-ht8s
Abstract
We explicated the validity of the Inventory of Depression and Anxiety Symptoms (IDAS; Watson et al., 2007) in two 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 (IDAS-CR); the mean convergent correlations were .51 and .62 in the student and patient samples, respectively. With the exception of Well-Being, the scales also consistently demonstrated significant discriminant validity. Furthermore, the scales displayed substantial criterion validity in relation to DSM-IV mood and anxiety disorder diagnoses in the patient sample. We 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 (Beck, Steer, & Brown, 1996) and Beck Anxiety Inventory (Beck & Steer, 1990).
Details
- Title: Subtitle
- Further validation of the IDAS: Evidence of Convergent, Discriminant, Criterion, and Incremental Validity
- Creators
- Scott Stuart - University of IowaDavid Watson - University of IowaMichael W O'Hara - University of IowaMichael Chmielewski - University of IowaElizabeth A McDade-Montez - University of IowaErin Koffel - University of IowaKristin Naragon - University of Iowa
- Resource Type
- Accepted manuscript
- DOI
- 10.17077/3yjk-ht8s
- Number of pages
- 46 pages
- Copyright
- Copyright © American Psychological Association, 2008. This article may not exactly replicate the final version published in the APA journal. It is not the copy of record. Posted by permission.
- Grant note
- This research was supported by National Institute of Mental Health Grant R01-MH068472 awarded to David Watson.
- Language
- English
- Date copyrighted
- 2008
- Date posted
- 03/26/2009
- Academic Unit
- Psychological and Brain Sciences; Psychiatry; Stead Family Department of Pediatrics
- Record Identifier
- 9983557532302771
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