1. A comparison of school readiness outcomes for children randomly assigned to a Head Start program and the program's wait list;*Abbott-Shim;Journal of Education for Students Placed at Risk,2003
2. Head Start graduates in school: Studies in New Haven, Connecticut;*Abelson,1974
3. Impact of summer 1965 Head Start on children's concept attainment during kindergarten;*Allerhand,1965
4. The effects of a preschool program upon the intellectual development and social competency of lower class children;*Ametjian,1965
5. Evaluation report: Early childhood education program, 1969 field test;*Appalachian Educational Laboratory,1970