Extracting Information from Wrong Answers in Computerized Adaptive Testing (Computer Diskette).

File characteristics: Text file; 1 file ;binary character set. Physical description: 1 computer diskette; 3 1/2 in.;high density; 1.4MB. System requirements: Post-script. A brief review of the history of polychotomous item response models is provided. After describing a new polychotomous item response model (Model 8), example of the Operating Characteristic Functions obtained when Model 8 is applied to a real test data are given. In general, inspection of goodness-of-fit plots indicates that Model 8 provide superior data fit and higher them information functions that the well-known 3-parameter logistic (dichotomous) them response model. A simulation of computerized adaptive testing (CAT) that used the actual item response s of applicants for military enlistment shows that Model 8 would be superior to the 3-parameter logistic model in a CAT environment. In this investigation, Model 8 increased test reliability by an amount that is equivalent to a 25% increases in test length.
Also available in hardcopy as AD-A272 832.