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Kernel Smoothing Approaches to Nonparametric Item Characteristic Curve Estimation.

Peer reviewed

Ramsay, J. O. – Psychometrika, 1991

Kernel smoothing methods for nonparametric item characteristic curve estimation are reviewed. A simulation with 500 examinees and real data from 3,000 records of the Graduate Record Examination illustrate the rapidity of kernel smoothing. Even when population curves are three-parameter logistic, simulation suggests no loss of efficiency. (SLD)

Descriptors: College Entrance Examinations, Computer Simulation, Efficiency, Equations (Mathematics)

Case Studies in Computer Adaptive Test Design through Simulation.

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Eignor, Daniel R.; And Others – 1993

The extensive computer simulation work done in developing the computer adaptive versions of the Graduate Record Examinations (GRE) Board General Test and the College Board Admissions Testing Program (ATP) Scholastic Aptitude Test (SAT) is described in this report. Both the GRE General and SAT computer adaptive tests (CATs), which are fixed length…

Descriptors: Adaptive Testing, Algorithms, Case Studies, College Entrance Examinations