评估项目格式与项目表现特征之间的关系。
Relationship between assessment item format and item performance characteristics.
机构信息
Bernard J. Dunn School of Pharmacy, Shenandoah University, Nashville, TN 37204, USA.
出版信息
Am J Pharm Educ. 2009 Dec 17;73(8):146. doi: 10.5688/aj7308146.
OBJECTIVE
To evaluate the relationship between assessment item formats (case-based versus noncase-based) and item performance characteristics.
METHODS
Assessment items (1,575) were collected from examinations administered in several therapeutics courses over 4 academic years. Items were categorized as either "case-based" or "noncase-based" and item performance characteristics (discrimination index and level of difficulty) were evaluated.
RESULTS
Noncase-based items represented approximately three-fourths of all items that were evaluated, and demonstrated a higher discrimination index than case-based items. Case-based items were generally lengthier and included more detailed information than noncase-based items; however, they were not more difficult and exhibited a lower discrimination index. Secondary analyses revealed that 5-foil multiple-choice items are more difficult and have a higher discrimination index compared to 4-foil items.
CONCLUSION
The format used for an examination/test item (case-based or noncase-based) has an impact on item performance characteristics.
目的
评估考核项目格式（基于案例与非基于案例）与项目绩效特征之间的关系。
方法
从过去四个学年中多个治疗学课程的考试中收集了 1575 个考核项目。将项目分为“基于案例”或“非基于案例”两类，并对项目绩效特征（鉴别指数和难度水平）进行评估。
结果
非基于案例的项目约占所有评估项目的四分之三，其鉴别指数高于基于案例的项目。基于案例的项目通常比非基于案例的项目更长，且包含更详细的信息；然而，它们并不更难，鉴别指数也更低。进一步的分析显示，5 选多的选择题比 4 选多的选择题更难，鉴别指数也更高。
结论
考试/测试项目使用的格式（基于案例或非基于案例）会对项目绩效特征产生影响。
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