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ERIC Number: EJ1162249
Record Type: Journal
Publication Date: 2017
Pages: 20
Abstractor: As Provided
ISSN: ISSN-0022-0655
How to Compare Parametric and Nonparametric Person-Fit Statistics Using Real Data
Sinharay, Sandip
Journal of Educational Measurement, v54 n4 p420-439 Win 2017
Person-fit assessment (PFA) is concerned with uncovering atypical test performance as reflected in the pattern of scores on individual items on a test. Existing person-fit statistics (PFSs) include both parametric and nonparametric statistics. Comparison of PFSs has been a popular research topic in PFA, but almost all comparisons have employed simulated data. This article suggests an approach for comparing the performance of parametric and nonparametric PFSs using real data. This article then shows that there is no clear winner between l[subscript z]*, a popular parametric PFS, and H[superscript T], a popular nonparametric statistic, in a comparison using the suggested approach. This finding is contradictory to the common finding shown by Karabatsos, Dimitrov and Smith, and Tendeiro and Meijer that H[superscript T] is more powerful than several parametric PFSs including l[subscript z]* and l[subscript z].
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A