Two-Phase Content-Balancing CD-CAT Online Item Calibration

• In Event: Refining Computerized Testing: Precision, Validity, and Innovation in Educational Measurement

Abstract

The aim of this study is to investigate the effectiveness of incorporating two-phase content-balancing constraints into the CD-CAT online calibration procedure. Preliminary results indicate that integrating content area constraints into the traditional online calibration process not only enhances item pool utilization but also maintains accurate estimation of new items. Furthermore, the effectiveness of calibration is influenced by sample size and the distribution of item parameters. This study is beneficial for helping teachers to provide content-targeted instructional interventions and facilitate students’ comprehensive development.

Authors

• Jing Huang, Purdue University

• Yuxiao Zhang, Purdue University

• Jason W Morphew, Purdue University

• Jayson Nissen, Montana State University

• Ben Van Dusen, Iowa State University

• Hua-Hua Chang, Purdue University