1. Stages in language development and reading exposure;Chomsky;Harvard Educational Review,1972
2. Developmental approach of Jean Piaget;Lovell;Monograph Supplement of American Journal of Mental Deficiency,1966
3. Thinking about people thinking about people thinking—A study of social cognitive development;Miller;Child Development,1970
4. The role of parallel function in the acquisition of relative classes in English;Sheldon;Journal of Verbal Learning and Verbal Behavior,1974
5. Replication of Miller et al.'s study of thinking about thinking;Raia,1975