A Comparison of DIF Detection for Polytomously Scored Items

Ya Mo

Research output: Contribution to conferencePresentation

Abstract

This study was conducted to make an empirical comparison of differential item functioning (DIF) detection for polytomously scored items using Standardized Mean Difference (SMD) and Logistic Regression with residual analysis. The two methods were compared using eighth grade and twelfth grade students’ performance on five prompts from the 2007 NAEP writing assessment. The two methods were employed to detect whether each prompt functioned differently on the performance of native English speakers and English as a second language (ESL) students. Results suggested that SMD and logistic regression with residual analysis tend to agree on the detection of DIF in polytomously scored items.
Original languageAmerican English
StatePublished - 12 Jul 2016
Externally publishedYes
Event2016 International Meeting of the Psychometric Society - Asheville, NC
Duration: 12 Jul 2016 → …

Conference

Conference2016 International Meeting of the Psychometric Society
Period12/07/16 → …

EGS Disciplines

  • Educational Assessment, Evaluation, and Research

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