认知诊断测验组卷方法对提高被试属性掌握模式的判准率至关重要。Henson和Douglas的组卷方法(2005)得到的认知诊断测验判准率不高,没有考虑属性间的层级关系是重要原因。本文提出一种基于属性层级结构的认知诊断组卷方法:首先根据属性层级结构确定待选项目类集合,其次根据新建构的选题指标确定项目类,然后由属性区分被试的能力确定各项目类中题目的数量,并在测验Q阵中放入可达阵。模拟研究表明:新方法比H&D方法在判准率上有很大的提高;新的选题指标比H&D的指标大大缩短计算时间。
Test construction for cognitive diagnosis is critical to improve examinee' s pattern match rate. However, Henson and Douglas' s method(2005 )did not consider attribute' s hierarchy structure, so it had a low pattern match rate. This paper presents a new test con- struction method based on attribute hierarchy structure:First, defining item category sets. Second,presenting a new index to chose item category. Third, choosing items for item categories by attribute recognition ability, and considering the teachability marx as a sub - ma- trix of a test Q matrix. The results of Monte Carlo simulation show that the method has higher pattern match ratios and shorter time of computing than Henson and Douglas'.