Binary Restrictive Threshold Method for Item Exposure Control in Cognitive Diagnostic Computerized Adaptive Testing

Frontiers in Psychology

article

Xiaojian Sun¹  Yizhu Gao³  Tao Xin⁴  Naiqing Song¹ 

[1] School of Mathematics and Statistics, Southwest University;Southwest University Branch, Collaborative Innovation Center of Assessment for Basic Education Quality;Faculty of Education, University of Alberta;Collaborative Innovation Center of Assessment for Basic Education Quality, Beijing Normal University

关键词: cognitive diagnostic computerized adaptive testing;    measurement accuracy;    item exposure rate;    binary searching algorithm;    cognitive diagnostic assessment;   

DOI  :  10.3389/fpsyg.2021.517155

学科分类：社会科学、人文和艺术（综合）

来源: Frontiers

【 摘 要 】

Although classification accuracy is a critical issue in cognitive diagnostic computerized adaptive testing, attention has increasingly shifted to item exposure control to ensure test security. In this study, we developed the binary restrictive threshold (BRT) method to balance measurement accuracy and item exposure. In addition, a simulation study was conducted to evaluate its performance. The results indicated that the BRT method performed better than the restrictive progressive (RP) and stratified dynamic binary searching (SDBS) approaches but worse than the restrictive threshold (RT) method in terms of classification accuracy. With respect to item exposure control, the BRT method exhibited noticeably stronger performance compared with the RT method, even though its performance was not as high as that of the RP and SDBS methods.

【 授权许可】

CC BY