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A novel technique of detecting DIF in items using z-score based on IRT model

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posted on 23.09.2021, 17:11 by Ankita DeyAnkita Dey
A novel technique of detecting DIF in items using z-score based on IRT model. A simple technique based on z-score is proposed and derived for Rasch Model and also compared with traditional DIF detection methods. The data set used for application is the State Level Achievement Survey data set from West Bengal, India. Binary responses on 40-item tests of 12518 examinees are taken.

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Declaration of conflicts of interest

None

Corresponding author email

ankitadey14@gmail.com

Lead author country

India

Lead author job role

Practitioner/Professional

Lead author institution

National Institute of Tuberculosis and Respiratory Diseases, India

Human Participants

Yes

Ethics statement

No ethical issue

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