Abstract #301019

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JSM 2002 Abstract #301019
Activity Number: 19
Type: Contributed
Date/Time: Sunday, August 11, 2002 : 2:00 PM to 3:50 PM
Sponsor: General Methodology
Abstract - #301019
Title: The Up-and-Down Method in A-Stratified Multistage Computerized Adaptive Testing
Author(s): Hung Chen*+ and Cheng-Der Fuh and Jia-Fang Yang
Affiliation(s): National Taiwan University and Academia Sinica and National Taiwan University
Address: 1 Roosevelt Road, Section 4, Taipei, International, 11704, Taiwan, ROC
Keywords: Computerized adaptive test ; up-and-down method
Abstract:

Computerized adaptive tests (CAT) commonly use recursive maximum likelihood estimation (R-MLE) as item selection method. The R-MLE method, however, has its limitations. For instance, it requires a lengthy calculation. As an alternative, the up-and-down method is used to select items. An asymptotic analysis on the maximum likelihood estimate of ability of the examinee will be reported. Although the resulting estimate is less efficient than R-MLE, we use a simulation study to illustrate that the efficiency loss can be quite small in moderate number of test items.

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