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Methods for Identifying Biased Test Items
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Methods for Identifying Biased Test Items

First Edition
  • Gregory Camilli - Rutgers, The State University of New Jersey, USA, Rutgers, USA
  • Lorrie A. Shepard - University of Colorado, Boulder, USA, University of Colorado School of Medicine, USA


May 1994 | 181 pages | SAGE Publications, Inc
This book makes clear to researchers what item-bias methods can (and cannot) do, how they work and how they should be interpreted.

Advice is provided on the most useful methods for particular test situations. The authors explain the logic of each method - from item-response theory to nonparametric, categorical methods - in terms of how differential item functioning (DIF) is defined by the method and how well the method can be expected to work. A summary of findings on the behaviour of indices in empirical studies is included. The book concludes with a set of principles for deciding when DIF should be interpreted as evidence of bias.

 
Introduction
Test Bias, Item Bias, and Test Validity

 
 
Early Item Bias Indices Based on Classical Test Theory and Analysis of Variance
 
Item Response Theory as Applied to Differential Item Functioning
 
Contingency Table Approaches
 
Interpretations of Bias from DIF Statistics
 
Conclusions and Caveats

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ISBN: 9780803944169
£65.00