This study examines the effects of public preschool expenditures on the math and science scores of 4th graders, holding constant child, family, and school characteristics, other relevant social expenditures, and country and year effects, in 7 Organisation for Economic Co-operation and Development (OECD) countries--Australia, Japan, the…

Compared the cost effectiveness of the social learning approach and the social learning approach with reinforcement to increase targeted social skills with socially withdrawn/isolate children. The frequency of four behaviours were observed. The social learning approach with reinforcement was more cost effective, thus more feasible. (Author)