Assessing Person Fit in Typical-Response Measures

Authored by: Pere J. Ferrando

Handbook of Item Response Theory Modeling

Print publication date:  December  2014
Online publication date:  November  2014

Print ISBN: 9781848729728
eBook ISBN: 9781315736013
Adobe ISBN: 9781317565703


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The fit of an item response theory (IRT) model to the data is usually assessed by considering the entire sample of test respondents (Chapter 6). Overall model-data fit is assessed by jointly considering all the items × individuals responses. At a more specific level, item fit is assessed on an item-by-item basis by considering the item responses across the group of respondents.

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