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How to Select, Retain, Delete and Replace Items in IRT-Based Scale Development: A Multi-Criteria Framework for Psychometric Optimisation
cognitiondifferential-item-functioningitem-response-theoryneurosciencepreprintpsychologyscale-development
Decisions about which items to keep, delete or replace shape the validity, precision and fairness of a scale, yet they are still often made with single statistics, such as the lowest discrimination parameter or the change in Cronbach’s alpha after deletion. This study proposes a multi-criteria frame
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