Quantitative analysis of the XX type multiple-choice question format

概要

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We examined the expected rate of correct answers(ERCA)for conventional A, K2, and X2 types of multiple-choice question formats, and the new XX type question format for which the number of correct answers is not specified. We determined how accurately the examinee's knowledge was evaluated for each type of question and investigated how changes in the format influenced the pass rate of the examinees. We found an increased correlation between the amount of knowledge and ERCA for the X2 type compared with the K2 and A types. We also found a good correlation between the amount of knowledge and ERCA for the X01 type. In theory, it was clear that a question of high identification coefficient could not be obtained simply by changing a question of the A or K2 type, for which the degree of difficulty of each choice was almost equal, to a question of the XX type. (J Osaka Dent Univ 2001 ; 35:133-140. )
大阪歯科学会の論文