An area theorem for thesame-different experiment |
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Authors: | R. John Irwin Michael J. Hautus John C. Butcher |
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Affiliation: | 1. Department of Psychology, The University of Auckland, Private Bag 92019, Auckland, New Zealand
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Abstract: | If observers in a same-different experiment base their decisions on the absolute difference between observations on a trial, the area under the receiver operating characteristic equals the maximum proportion of correct decisions that an unbiased independent-observations observer could attain. Even though the differencing strategy is suboptimal,the area measure yields an index of optimal performance. |
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