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ERIC Number: EJ1111292
Record Type: Journal
Publication Date: 2005-Sep
Pages: 20
Abstractor: As Provided
ISSN: EISSN-2330-8516
The Effectiveness of Enhancing Test Security by Using Multiple Item Pools. Research Report. ETS RR-05-19
Zhang, Jinming; Chang, Hua-Hua
ETS Research Report Series, Sep 2005
This paper compares the use of multiple pools versus a single pool with respect to test security against large-scale item sharing among some examinees in a computer-based test, under the assumption that a randomized item selection method is used. It characterizes the conditions under which employing multiple pools is better than using a single whole pool in terms of minimizing the expected number of compromised items encountered by an examinee. The results obtained in this paper provide guidelines for constructing multiple pools optimally and evaluating the risks associated with some test designs that employ item reuse schemes. Finally, an adjusted-pool approach is proposed to achieve better test security than either the single-pool approach or the multiple-pool approach.
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A