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Person Heterogeneity of the BDI-II-C and Its Effects on Dimensionality and Construct Validity: Using Mixture Item Response Models
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Wu, Pei-Chen; Huang, Tsai-Wei – Measurement and Evaluation in Counseling and Development, 2010
This study was to apply the mixed Rasch model to investigate person heterogeneity of Beck Depression Inventory-II-Chinese version (BDI-II-C) and its effects on dimensionality and construct validity. Person heterogeneity was reflected by two latent classes that differ qualitatively. Additionally, person heterogeneity adversely affected the…
Descriptors: Construct Validity, Validity, Depression (Psychology), Item Response Theory