The Use of the lz and lz* Person-Fit Statistics and Problems Derived From Model Misspecification

We extend a recent didactic by Magis, Raîche, and Béland on the use of the lz and lz * person-fit statistics. We discuss a number of possibly confusing details and show that it is important to first investigate item response theory model fit before assessing person fit. Furthermore, it is argued that appropriate distributions are only a first step for practical use of person-fit statistics.

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Year of publication:	2012
Authors:	Meijer, Rob R. ; Tendeiro, Jorge N.
Published in:	Journal of Educational and Behavioral Statistics. - Vol. 37.2012, 6, p. 758-766
Subject:	item response theory \| person fit \| model fit \| aberrant response patterns \| validity scales

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Extent:	text/html
Type of publication:	Article
Source:	RePEc - Research Papers in Economics

Persistent link: https://www.econbiz.de/10010776014