一种基于多阶认知诊断模型测评科学素养的方法

科学素养是指作为一名有反思意识的公民所具有的解决科学问题和运用科学理念的能力。为实现在认知诊断中对科学素养的测评, 本文基于PISA 2015科学素养测评框架首次提出科学素养包含的三阶潜在结构, 使用新提出的多阶认知诊断模型对PISA 2015科学测评数据进行分析, 并通过模拟研究探究新模型的心理测量学性能。结果表明：(1)新模型能够较好地分析包含三阶潜在结构的科学素养; (2)科学知识对科学素养的影响最大, 科学背景次之, 科学能力的影响最小; (3)全贝叶斯MCMC算法能够为新模型提供较精准的参数估计。

Using a multi-order cognitive diagnosis model to assess scientific literacy

In PISA 2015, scientific literacy is defined as “the ability to engage with science-related issues, and with the ideas of science, as a reflective citizen”. There are four interdependent dimensions are specified in the scientific literacy assessment framework for PISA 2015: Competencies, Knowledge, Contexts, and Attitudes. Given that knowledge of scientific literacy contributes significantly to individuals’ personal, social, and professional lives, it is of vital importance to find an objectively and accurately assessment method for scientific literacy. However, only unidimensional IRT models were used in the analysis in PISA 2015. Which means that the analysis model does not match with such a multidimensional assessment framework. It is desired to develop a new analysis model. This study attempts to measure scientific literacy in cognitive diagnostic assessment for the first time.