Files in this item



application/pdfEdison_Choe.pdf (536kB)
(no description provided)PDF


Title:Controlling item exposure for response time-informed item selection in computerized adaptive testing
Author(s):Choe, Edison
Advisor(s):Chang, Hua-Hua
Department / Program:Psychology
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):item exposure
item selection
response time
computerized adaptive testing (CAT)
Abstract:Fan et al. (2012) demonstrated that inversely weighting the maximum information criterion (MIC) by the expected response time for each item effectively reduced the average completion time for a test of fixed length while maintaining efficiency of ability estimation. However, this also resulted in an extremely skewed distribution of item exposure rates. To counter this issue, they recommended the use of the a-stratification with b-blocking (ASB) method, which balanced item exposure very well but at the cost of compromising on the average test time reduction and increasing the error of ability estimation. Therefore, the current study investigated several alternative methods for item exposure control when using response time-informed MIC, of which the most promising technique was inversely weighting MIC by the expected response time centered around 1.3. Simulation results showed that this simple modification markedly improved performance over employing ASB when utilizing response time information for item selection in computerized adaptive testing (CAT).
Issue Date:2014-05-30
Rights Information:Copyright 2014 Edison Choe
Date Available in IDEALS:2014-05-30
Date Deposited:2014-05

This item appears in the following Collection(s)

Item Statistics