1. Benefit-cost analysis of the Perry Preschool program and its policy implications;Barnett;Educational Evaluation and Policy Analysis,1985
2. The Perry Preschool program and its long-term effects: A benefit-cost analysis;Barnett,1985
3. On the social rate of discount;Baumol;American Economic Review,1968
4. Changed lives: The effects of the Perry Preschool program on youths through age 19;Berrueta-Clement,1984
5. Toward an experimental ecology of human development;Bronfenbrenner;American Psychologist,1977