ERIC Number: ED247298
Record Type: RIE
Publication Date: 1984-Feb
Reference Count: 0
Efficiency and Precision in Two-Stage Adaptive Testing.
Loyd, Brenda H.
One form of adaptive testing involves a two-stage procedure. The first stage is the administration of a routing test. From this first test, an estimate of an examinee's ability is obtained. On the basis of this ability estimate, a second test focused on a given ability level is administered. The purpose of this study was to compare the efficiency of three routing tests of different lengths (10, 15, and 20 items). The routing tests and one of six 40-item second-stage tests measuring mathematics concepts, were administered to 1439 students, grades 3-8. The three routing tests were compared on the basis of the consistency with which they assigned examinees to the same second-stage test, and in terms of the accuracy with which they indicated the most appropriate second-stage test. The increase in information attained by employing a routing test (with cut-off values based on the raw score scale) over that which would result from assigning examinees to test levels on the basis of grade level alone suggest that more precise measurement may be possible with a two-stage procedure than with a single stage. The 20-item routing test was most effective. (BW)
Publication Type: Speeches/Meeting Papers; Reports - Research
Education Level: N/A
Authoring Institution: N/A
Note: Paper presented at the Annual Meeting of the Eastern Educational Research Association (West Palm Beach, FL, February 9-11, 1984).