Quantitative Psychology

1. New Results on an Improved Algorithm Estimating Generalized Latent Variable Models (von Davier).- 2. Properties of second-order  exponential models as multidimensional item response models (Anderson and Yu).- 3. Pseudo-likelihood Estimation of Multidimensional Response Models:Polytomous and Dichotomous Items (Pack and Anderson).- 4. Fitting Graded Response Models to Data with Nonnormal Latent Traits (Kuo and Sheng).- 5. An Extention of Rudner-based Consistency and Accuracy Indices for Multidimensional Item Response Theory (Wang, Song and Ding).- 6. Supporting diagnostic inferences using significance tests for subtest scores (Lorie).- 7. A comparison of two MCMC algorithms for the 2PL IRT model (Chang and Sheng).- 8. Similar DIFs: Differential Item Functioning and Factorial Invariance for Scales with Seven ("Plus or Minus Two") Response Alternatives (Thissen).- 9. Finally! A Valid Test of Configural Invariance Using Permutation in Multiple-Group CFA (Jorgenson, Kite, Chen and Short).- 10. Outcries of Dual Scaling: The Key is Duality (Nishisato).- 11. The Most Predictable Criterion with Fallible Data (Kim).- 12. Asymmetric Multidimensional Scaling of Cognitive Similarities Among Occupational Categories (Okada and Hayashi).- 13. On the Relationship Between Squared Canonical Correlation and Matrix Norm (Hyashi, Yuan and Liang).- 14. Breaking through the sum score barrier (Ramsay and Wiberg).- 15. Overestimation of Reliability by Guttman's Lambda 4, Lambda 5, and Lambda 6, and the Greatest Lower Bound (Oosterwijk, van der Ark and Sijtsma).- 16. The Performance of Five Reliability Estimates at Multidimensional Test Situations (Sha and Ackerman).- 17. Weighted Guttman errors: Handling ties and two-level data (Koopman, Zijlstra and Van der Ark).- 18. Measuring Cognitive Processing Capabilities in Solving Mathematical Problems (Embretson).- 19. Parameter Constraints of the Reduced RUM as a Logit Model (Kohn).- 20. Hypothesis Testing for Item Consistency Index in

L. Andries van der Ark is professor by special appointment in quantitative research methods at the Research Institute of Child Development and Education of the University of Amsterdam. His research interests include reliability analysis, nonparametric item response theory, Mokken scale analysis, and marginal models for the analysis of test and questionnaire data.

Marie Wiberg is professor of statistics with a specialty in psychometrics at Umeå University in Sweden. Her research interests include test equating, applied statistics, large scale assessments, and psychometrics in general.

Steven A. Culpepper is associate professor of statistics at the University of Illinois at Urbana-Champaign. His research interests include statistical modeling in the social sciences, Bayesian models and computation, cognitive diagnosis, and alternative standardized testing formats.
Jeffrey A. Douglas is a professor of statistics at the University of Illinois at Urbana-Champaign. He conducts research in latent variable analysis with a particular emphasis on item response models and cognitive diagnosis models with applications in educational testing.
Wen-Chung Wang is chair professor of educational and psychological measurement at the Educational University of Hong Kong. His research interests include Rasch measurement, item response theory, computerized adaptive testing, diagnostic classification models, and ipsative data analysis.