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Peer reviewedRamsay, 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)
