| Literature DB >> 14992659 |
James W Langenbucher1, Erich Labouvie, Christopher S Martin, Pilar M Sanjuan, Lawrence Bavly, Levent Kirisci, Tammy Chung.
Abstract
Item response theory (IRT) is supplanting classical test theory as the basis for measures development. This study demonstrated the utility of IRT for evaluating DSM-IV diagnostic criteria. Data on alcohol, cannabis, and cocaine symptoms from 372 adult clinical participants interviewed with the Composite International Diagnostic Interview--Expanded Substance Abuse Module (CIDI-SAM) were analyzed with Mplus (B. Muthen & L. Muthen, 1998) and MULTILOG (D. Thissen, 1991) software. Tolerance and legal problems criteria were dropped because of poor fit with a unidimensional model. Item response curves, test information curves, and testing of variously constrained models suggested that DSM-IV criteria in the CIDI-SAM discriminate between only impaired and less impaired cases and may not be useful to scale case severity. IRT can be used to study the construct validity of DSM-IV diagnoses and to identify diagnostic criteria with poor performance.Entities:
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Year: 2004 PMID： 14992659 DOI： 10.1037/0021-843X.113.1.72
Source DB: PubMed Journal: J Abnorm Psychol ISSN： 0021-843X