계통 군집 분석을 통한 학생들의 진화 개념의 구조 분석
Analysis of Student's Structural Representations of Evolution Concepts by Hierarchical Cluster Analysis
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Abstract
The aim of this study is to represent student's evolution concept structure by hierarchical cluster analysis. A set of 17 concepts in the domain of evolution were selected. All possible pairs of concepts were formed for rating task. 70 undergraduate students rated each pair of concepts using a five-point scale. The ratings were analyzed by a hierarchical cluster analysis. The main results are as follows. First, two large clusters emerge from the data- first, history and change of earth or environment, second, mechanism of evolution. In second cluster, evolution is very closed related with progress and higher organism. Concepts of Natural selection, struggle for existence, variation, gene, population are far from evolution concepts and scattered each other. Hierarchical cluster analysis for each student's ratings shows unique structure of each person and misconception and failure in understanding of structure of evolution concept.
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