A Comparative Study of a Nursery-School Versus a Non-Nursery-School Group.Ethel Kawin , Carolyn HoeferChildren of Preschool Age: Studies in Socio-Economic Status, Social Adjustment, and Mental Ability, with Illustrative Cases.Ethel KawinThe Developmental Status of the Preschool Child as a Prognosis of Future Development.Gertrude Porter Driscoll

In: The American journal of sociology, Band 40, Heft 4, S. 542-544