1. Observational study of behavior: Sampling methods;Altmann;Behavior,1974
2. Stress in early childhood;Anthony,1959
3. Stress levels in kindergarten children: Full-day versus half-day and academic versus developmentally appropriate programs;Bentley,1989
4. Does direct instruction cause delinquency?;Bereiter;Early Childhood Research Quarterly,1986
5. Stress in childhood;Blom,1986