1. Changed lives: The effects of the Perry preschool program on youths through age 19;Berutta-Clement,1984
2. Does direct-instruction cause delinquency?;Bereiter;Early Childhood Research Quarterly,1986
3. Toward an experimental ecology of human development;Bronfenbrenner;American Psychologist,1977
4. Daycare;Clarke-Stewart,1982
5. The social world of the child;Damon,1977