A Continuous a-Stratification Index for Item Exposure Control in Computerized Adaptive Testing
نویسندگان
چکیده
منابع مشابه
Maximum information stratification method for controlling item exposure in computerized adaptive testing.
The proposal for increasing the security in Computerized Adaptive Tests that has received most attention in recent years is the a-stratified method (AS - Chang and Ying, 1999): at the beginning of the test only items with low discrimination parameters ( a ) can be administered, with the values of the a parameters increasing as the test goes on. With this method, distribution of the exposure rat...
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Item-exposure control in computerized adaptive testing is implemented by imposing item-ineligibility constraints on the assembly process of the shadow tests. The method resembles Sympson and Hetter's (1985) method of item-exposure control in that the decisions to impose the constraints are probabilistic. However, the method does not require time-consuming simulation studies to set values for co...
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DOCUMENT RESUME
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While computerized adaptive tests have enjoyed tremendous growth in the past decade, satisfactory solutions for many important problems are still unavailable. Among these problems, a critical one is the control of item exposure rate. Because adaptive algorithms are designed to select optimal items, they tend to choose items with high discriminating power. Thus, these items are selected far more...
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Computerized adaptive testing (CAT) provides a score as well as item response times. However, the investigation of what additional meaning may result from response time information is of particular interest. Data from 5,912 young men on a computerized adaptive test were available. Earlier studies indicate longer response times for wrong responses. This was replicated in larger settings. However...
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ژورنال
عنوان ژورنال: Applied Psychological Measurement
سال: 2018
ISSN: 0146-6216,1552-3497
DOI: 10.1177/0146621618758289