1. On the functional origins of essentialism;Barrett;Mind and Society,2001
2. Remembering: A Study in Experimental and Social Psychology;Bartlett,1932
3. Steps to an Ecology of Mind;Bateson,1972
4. Culture and the Evolutionary Process;Boyd,1985
5. The evolution of reciprocity in sizable groups;Boyd;J. Theor. Biol.,1988