1. Yeh, W., & Barsalou, L. W. (2004). The situated character of concepts. Manuscript in review
2. Wiemer-Hastings, K., & Graesser, A. C. (2000). Representing abstract concepts with abstract structures. Proceedings of the 22nd Annual Conference of the Cognitive Science Society (pp. 983–989). Mahwah, NJ: Erlbaum
3. Perceptual symbol systems;Barsalou;Behavioral and Brain Sciences 22,1999
4. Paivio, A. (1986). Mental Representations: A Dual Coding Approach. New York: Oxford University Press
5. Abstraction in perceptual symbol systems