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Severity of Organized Item Theft in Computerized Adaptive Testing: An Empirical Study CAT

Author(s):
Yi, Qing; Zhang, Jinming; Chang, Hua-Hua
Publication Year:
2006
Report Number:
RR-06-22
Source:
ETS Research Report
Document Type:
Report
Page Count:
25
Subject/Key Words:
Test Security, Computerized Adaptive Testing (CAT)

Abstract

The results of the study indicated that the damage could be very severe, especially when the thieves took the test in the early stage of utilization of an item pool. Among the three CAT methods examined in this study, the maximum item information method with Sympson-Hetter exposure control was most vulnerable to organized item theft.

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