6Bruner J S, Goodnow J, Austin G A. A study of thinking.New York: Wiley, 1956
7Medin D L. Concepts and conceptual structure. American Psychologist, 1989, 44:1469~1481
8Erickson M A, Kruschke J K. Rules and Exemplars in Category Learning. Journal of Experimental Psychology: General, 1998,127:107~140
9Medin D L, Goldstone R L, Gentne D. Similarity involving attributes and relations: Judgments of similarity and difference and not inverses. Psychological Science, 1990, 1:64~69
10Komatsu L k. Recent view of conceptual structure. Psychological Bulletin, 1992, 112:500~502