Exploring a Stable Difficulty Index for Polytomous Essay Items [electronic resource] / Renbang Zhu and Feng Yu.

To ensure fairness, it is of critical importance that testing programs make sure that essay items given to examinees are equivalent in difficulty. The purpose of this study was to evaluate the stability and accuracy of a logistic regression based polytomous essay difficulty index. Preliminary result...

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Bibliographic Details

Online Access:	Full Text (via ERIC)
Main Author:	Zhu, Renbang
Other Authors:	Yu, Feng
Format:	Electronic eBook
Language:	English
Published:	[Place of publication not identified] : Distributed by ERIC Clearinghouse, 2003.
Subjects:	Difficulty Level. Essay Tests. Indexes. Measurement Techniques. Regression (Statistics) Reliability. Simulation. Test Items.