The present study addresses the issue in assessment of the impact of differential item functioning on the measures obtained applying the Rasch model when the questionnaire is formed by polytomous items. An item is said to display differential item functioning when it behaves differently among different groups of respondents (for example males and females). A simulation study is used in order to deal with the issue. A differential item functioning analysis is performed making use of a real database concerning the Survey on Italian Social Cooperatives carried out in 2007.
The assessment of DIF on Rasch measures with an application to job satisfaction
GOLIA, Silvia
2010-01-01
Abstract
The present study addresses the issue in assessment of the impact of differential item functioning on the measures obtained applying the Rasch model when the questionnaire is formed by polytomous items. An item is said to display differential item functioning when it behaves differently among different groups of respondents (for example males and females). A simulation study is used in order to deal with the issue. A differential item functioning analysis is performed making use of a real database concerning the Survey on Italian Social Cooperatives carried out in 2007.File in questo prodotto:
| File | Dimensione | Formato | |
|---|---|---|---|
|
GoliaEJASADSS2010.pdf
gestori archivio
Tipologia:
Full Text
Licenza:
DRM non definito
Dimensione
400.98 kB
Formato
Adobe PDF
|
400.98 kB | Adobe PDF | Visualizza/Apri Richiedi una copia |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
