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标题：ANÁLISIS DEL NÚMERO ÓPTIMO DE OPCIONES DESDE LA TEORÍA DE LA RESPUESTA AL ÍTEM
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作者：Francisco J. Abad ; Julio Olea ; Vicente Ponsoda 等
期刊名称：Psicothema
印刷版ISSN：0214-9915
电子版ISSN：1886-144X
出版年度：2001
卷号：13
期号：1
页码：152-158
出版社：Cologio Oficial de Psicólogos del Principado
摘要：The optimum number of alternatives in multiple choice items is studied. The new procedure applied is based on Item Response Theory and only needs a single sample. Concretely, a 5-alternative 221 items English Vocabulary test was administered to 452 people. Their answers to the 1/2/3 worst alternatives were randomly reassigned to generate their hypothetical answers to items of 4/3/2 alternatives, respectively. Changes in item parameters, test information function and ability estimation were analysed. The worst results were provided by 2-alternative items. As the results in the 3- and 4-alternative items do hardly differ from those obtained in the original 5-alternative case, and in the 3-alternative case the role of partial knowledge is less important, 3-alternative items were considered the best choice. The effects of number of alternatives on ability estimation was also discussed.