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Applied Psychological Measurement
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A Note on Decision Theoretic Coefficients for Tests

Rand R. Wilcox

University of California at Los Angeles

Recently it was suggested that the Bayes risk might be used to characterize tests. To conform to common practices about indexes, a rescaling of the Bayes risk was proposed. The motivation for this new coefficient, d, was to provide an index that has a large value when the Bayes risk is small and that has a value in the closed interval [0, 1]. However, since d might have a value outside this range, a modification of d is described which yields an index that always has a value between zero and one.

Applied Psychological Measurement, Vol. 2, No. 4, 609-613 (1978)
DOI: 10.1177/014662167800200415
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