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Estimating the Imputed Social Cost of Errors of Measurement IRT

Lord, Frederic M.
Publication Year:
Report Number:
ETS Research Report
Document Type:
Page Count:
Subject/Key Words:
Office of Naval Research, Cutting Scores, Error of Measurement, Item Response Theory (IRT), Social Problems, Test Construction, Testing Problems


If a loss function is available specifying the social cost of an error of measurement in the score on a unidimensional test, an asymptotic method, based on item response theory, is developed for optimal test design for a specified target population of examinees. Since in the real world such loss functions are not available, it is more useful to reverse this process; thus a method is developed for finding the loss function for which a given test is an optimally designed test for the target population. An illustrative application is presented for one operational test. (Author). (40pp.)

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