Search results for author:"Shudong Wang"
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Precision of Warm's Weighted Likelihood Estimates for a Polytomous Model in Computerized Adaptive Testing
Applied Psychological Measurement Vol. 25, No. 4 (2001) pp. 317–31
Evaluated the relative accuracy of the weighted likelihood estimate (WLE) of T. Warm (1989) compared to the maximum likelihood estimate (MLE), expected a posteriori estimate, and maximum a posteriori estimate. Results of the Monte Carlo study, which ...
Computer Assisted Language Learning Vol. 21, No. 2 (April 2008) pp. 167–180
This paper outlines the knowledge and attitudes that 57 language teachers in Japan have regarding copyright laws in relation to using external materials in the classroom. A 13-item online survey was distributed, and semi-structured interviews were...
Turkish Online Journal of Educational Technology Vol. 13, No. 1 (January 2014) pp. 207–216
This research investigates East Asian students' perceptions towards e-learning privacy. The survey was first carried out in Japan (N1 = 255) and China (N2 = 307) in 2009. In 2012 the same survey was conducted again in these two countries but...
Incorporating Person Covariates and Response Times as Collateral Information to Improve Person and Item Parameter Estimations
Annual Meeting of the National Council on Measurement in Education (NCME) 2011 (April 2011)
For decades, researchers and practitioners have made a great deal of effort to study a variety of methods to increase parameter accuracy, but only recently can researchers start focusing on improving parameter estimations by using a joint model that ...
Language Learning & Technology Vol. 17, No. 3 pp. 117–134
This paper describes an ongoing language-learning project, three years into its development. We examine both the feasibility and the limitations of developing English reading and grammar skills through the interface of mobile phones. Throughout the...
Effect of Person Cluster on Accuracy of Ability Estimation of Computerized Adaptive Testing in K-12 Education Assessment
Annual Meeting of the American Educational Research Association 2011 (Oct 05, 2011)
The ability estimation procedure is one of the most important components in a computerized adaptive testing (CAT) system. Currently, all CATs that provide K-12 student scores are based on the item response theory (IRT) model(s); while such...
Journal of Educational Measurement Vol. 50, No. 2 (2013) pp. 186–203
This study demonstrated the equivalence between the Rasch testlet model and the three-level one-parameter testlet model and explored the Markov Chain Monte Carlo (MCMC) method for model parameter estimation in WINBUGS. The estimation accuracy from...
International Association for Development of the Information Society (IADIS) International Conference on Educational Technologies 2017 (2017)
Digital portfolios can provide a space where evidence of a learner's competency is stored and digital badges can be used in their portfolios as valid indicators of accomplishment, skill, knowledge, or interest. The authors issued "digital...
Investigating Effect of Ignoring Hierarchical Data Structures on Accuracy of Vertical Scaling Using Mixed-Effects Rasch Model
Annual Meeting of the National Council on Measurement in Education (NCME) 2010 (2010)
The vertical scales of large-scale achievement tests created by using item response theory (IRT) models are mostly based on cluster (or correlated) educational data in which students usually are clustered in certain groups or settings (classrooms or ...
Construct Validity and Measurement Invariance of Computerized Adaptive Testing: Application to Measures of Academic Progress (MAP) Using Confirmatory Factor Analysis
Annual Meeting of the American Educational Research Association 2012 (April 2012)
The purposes of this study are twofold. First, to investigate the construct or factorial structure of a set of Reading and Mathematics computerized adaptive tests (CAT), "Measures of Academic Progress" (MAP), given in different states at different...
Comparability of Computer-Based and Paper-and-Pencil Testing in K-12 Reading Assessments: A Meta-Analysis of Testing Mode Effects
Educational and Psychological Measurement Vol. 68, No. 1 (2008) pp. 5–24
In recent years, computer-based testing (CBT) has grown in popularity, is increasingly being implemented across the United States, and will likely become the primary mode for delivering tests in the future. Although CBT offers many advantages over...
Educational and Psychological Measurement Vol. 67, No. 2 (2007) pp. 219–238
This study conducted a meta-analysis of computer-based and paper-and-pencil administration mode effects on K-12 student mathematics tests. Both initial and final results based on fixed- and random-effects models are presented. The results based on...