Using Displacement for Anchor Item Stability Check in Rasch Model Linking

• In Event: Electronic Board Session IV

Abstract

Simulation and real data studies are used to investigate the appropriateness of using the displacement values provided in the Winsteps for anchor item stability check. The results are compared against four scale transformation methods under different conditions of the length of anchor item set and item response missingness.

Authors

• Youngmi Cho, RIVERSIDE ASSESSMENTS

• Hsin-Ro Wei, RIVERSIDE INSIGHTS

• Hyeon-Joo Oh, RIVERSIDE INSIGHTS