Bias-Corrected Fixed Item Parameter Calibration, with an Application to PISA Data

Fixed item parameter calibration (FIPC) is commonly used to compare groups or countries using an item response theory model with a common set of fixed item parameters. However, FIPC has been shown to produce biased estimates of group means and standard deviations in the presence of random differenti...

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Bibliographic Details
Main Author: Alexander Robitzsch
Format: Article
Language:English
Published: MDPI AG 2025-04-01
Series:Stats
Subjects:
Online Access:https://www.mdpi.com/2571-905X/8/2/29
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