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pro vyhledávání: '"Stephen L. Paull"'
Autor:
Stephen L. Paull, Norman F. Kafer
Publikováno v:
Australian Journal of Education. 27:304-308
The relationship between children's levels of cognitive development and their formation of a self-concept was examined. Three comparisons were made between 30 preoperational boys and girls (mean age 6 years 4 months) and 30 operational boys and girls