An Investigation of the Power of the Likelihood Ratio Goodness-of-Fit Statistic in Detecting Differential Item Functioning.

Ankenmann, Robert D.; Witt, Elizabeth A.; Dunbar, Stephen B.

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Peer reviewed

ERIC Number: EJ605923

Record Type: Journal

Publication Date: 1999

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ISSN: ISSN-0022-0655

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An Investigation of the Power of the Likelihood Ratio Goodness-of-Fit Statistic in Detecting Differential Item Functioning.

Ankenmann, Robert D.; Witt, Elizabeth A.; Dunbar, Stephen B.

Journal of Educational Measurement, v36 n4 p277-300 Win 1999

Investigated the power and Type I error rate of the likelihood ratio goodness-of-fit statistic (LR) in detecting differential item functioning (DIF) under F. Samejima's (1969, 1972) graded response model. Monte Carlo study results show conditions under which the LR or Mantel Haenszel procedures have adequate power to detect DIF. (SLD)

Descriptors: Goodness of Fit, Item Bias, Monte Carlo Methods, Power (Statistics)

Publication Type: Journal Articles; Reports - Evaluative; Speeches/Meeting Papers

Education Level: N/A

Audience: N/A

Language: English

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