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MIMIC DIF 분석 기법의 실증적 비교: 불편정착기준문항의 임의적 선택에 대한 잠재적 해결책

Empirical Comparisons of Analytic Strategies for MIMIC DIF Analysis: A Potential Solution for Biased Anchor Set

한국심리학회지: 일반 / Korean Journal of Psychology: General, (P)1229-067X; (E)2734-1127
2011, v.30 no.4, pp.1083-1110
이재훈 (Univ. of Kansas)
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Abstract

The purpose of this Monte Carlo study was to evaluate the performance of the multiple indicators and multiple causes (MIMIC) confirmatory factor analysis (CFA) for detecting differential item functioning (DIF). Specifically, this study compared different application strategies including two conventional testing approaches (forward-inclusion, backward-elimination) and five test statistic values (uncorrected or Bonferroni-corrected LR, △CFI of 0.01 or 0.002, △SRMR of 0.005) across conditions of different item type, test length, sample size, impact, and DIF type and DIF size in a target item and an anchor set. In addition, the author proposed an alternative testing approach (effects-coded backward-elimination) as a potential solution for arbitrary choice of a DIF-free anchor set. Simulation results indicated that when an anchor set was truly biased, only the proposed approach performed adequately under several conditions. False positive rates were controlled at the nominal alpha level (with Bonferroni-corrected LR) or slightly inflated (with uncorrected LR) as the DIF contamination rate in a scale decreased.

keywords
복수측정변수복수원인모형, 차별기능, 불편정착기준문항, 분석 기법, MIMIC, DIF, biased anchor set, testing approach., MIMIC, DIF, biased anchor set, testing approach.

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한국심리학회지: 일반