不同知识引出方法对科学概念结构表征的影响——来自多维标度法的证据

不同知识引出方式对获得的群体概念结构的影响,是概念结构研究中重要且未解决的问题。以17名中学化学教师为被试,通过自由分类、概念构图和语义相关性评定,引出被试对15个与原子相关概念的认识,并以多维标度法分析群体概念结构。研究发现:由不同知识引出方式获得的群体概念结构具有不同的特点,通过语义相关性评定获得的群体概念结构更适合呈现科学概念具有复杂关系的特点。研究结果有助于研究者选择合适的研究方法,实施更有效的群体概念结构研究。

Effect of Different Methods of Knowledge Elicitation to Representation of Science Conceptual Structure:Evidence from Multidimensional Scaling

It is an important and unsolved research issue about conceptual structure that different methods of knowledge elicitation can influence the obtained conceptual structure of the group. Taking seventeen middle school chemistry teachers as participants, card sorting, concept mapping and rating of degree of relatedness were used to elicit participants’ knowledge about fifteen atom-related concepts. The conceptual structures of the group were analyzed by multidimensional scaling. The results were below:(1) Conceptual structures of the group obtained by different methods of the knowledge elicitation had different kinds of feature;(2) Conceptual structure of the group obtained by rating of degree of relatedness was more suitable for presenting the complex relationship of science concepts. The results could help the researcher to select a suitable research method and implement more effective research of conceptual structure.