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Direct linkAndrich, David; Hagquist, Curt – Educational and Psychological Measurement, 2015
Differential item functioning (DIF) for an item between two groups is present if, for the same person location on a variable, persons from different groups have different expected values for their responses. Applying only to dichotomously scored items in the popular Mantel-Haenszel (MH) method for detecting DIF in which persons are classified by…
Descriptors: Test Bias, Test Items, Item Response Theory, Statistical Analysis
Peer reviewedHagquist, Curt; Andrich, David – Social Indicators Research, 2004
The cross-national WHO-study Health Behaviour in School-Aged Children (HBSC) is a comprehensive adolescent survey ongoing in Europe based on a public health perspective. The present study, examining the HBSC-instrument on subjective health, uses the unidimensional Rasch model. Items are analysed with respect to their operating characteristics…
Descriptors: Foreign Countries, Public Health, Item Response Theory
