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Item Response Theory2
Monte Carlo Methods2
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Effect Size1
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Educational and Psychological…2
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Zopluoglu, Cengiz2
Ahn, Soyeon1
Park, Sung Eun1
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Differential Item Functioning Effect Size from the Multigroup Confirmatory Factor Analysis for a Meta-Analysis: A Simulation Study
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Park, Sung Eun; Ahn, Soyeon; Zopluoglu, Cengiz – Educational and Psychological Measurement, 2021
This study presents a new approach to synthesizing differential item functioning (DIF) effect size: First, using correlation matrices from each study, we perform a multigroup confirmatory factor analysis (MGCFA) that examines measurement invariance of a test item between two subgroups (i.e., focal and reference groups). Then we synthesize, across…
Descriptors: Item Analysis, Effect Size, Difficulty Level, Monte Carlo Methods
A Finite Mixture Item Response Theory Model for Continuous Measurement Outcomes
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Zopluoglu, Cengiz – Educational and Psychological Measurement, 2020
A mixture extension of Samejima's continuous response model for continuous measurement outcomes and its estimation through a heuristic approach based on limited-information factor analysis is introduced. Using an empirical data set, it is shown that two groups of respondents that differ both qualitatively and quantitatively in their response…
Descriptors: Item Response Theory, Measurement, Models, Heuristics