Hunt D R
Med Educ. 1978 Nov;12(6):417-20. doi: 10.1111/j.1365-2923.1978.tb01420.x.
Interpretation of visual data is an essential component of clinical competence. Illustrated multiple choice items have been used to measure interpretation, but the effects of introducing visual material into multiple choice items has not been critically assessed. A series of problem-sequenced multiple choice items containing, in the stem, a description of visual data such as a radiologist's report, was selected and matched with identical items where the description was replaced by reproductions of the original data. These two series of items were arranged into two parallel examinations which were taken by groups of final year medical students. From a comparison of the performance of the students in these two examinations it is concluded that substitution of actual visual data for the written description increases the difficulty of items, but is without consistent effect on discrimination. The illustrated format was commended by students for its clinical relevance but certain problems with the reproduction of radiographs and the selection of data have been revealed.
视觉数据解读是临床能力的重要组成部分。带插图的多项选择题已被用于测量解读能力，但将视觉材料引入多项选择题的效果尚未得到严格评估。选择了一系列按问题顺序排列的多项选择题，题干中包含放射科医生报告等视觉数据描述，并将其与描述被原始数据复制品取代的相同题目进行匹配。这两组题目被安排在两场平行考试中，由医学专业最后一年的学生群体参加。通过比较学生在这两场考试中的表现得出结论，用实际视觉数据替代书面描述会增加题目的难度，但对区分度没有一致的影响。学生们称赞这种带插图的形式具有临床相关性，但也发现了X光片复制和数据选择方面的一些问题。
