in most countries, educational programs and condom use is recommended as the most important approaches in controlling hiv infection. we examine the role of different approaches in controlling aids epidemics in our region. we find a high failure rate and probably undesirable effects for condom recommendation in epidemiological scale especially considering the low prevalence of hiv infection in o...

Early childhood education (ECE) programs offer a promising mechanism for preventing early externalizing behavior problems and later antisocial behavior; yet, questions remain about how to best maximize ECE's potential. Using a meta-analytic database of 31 studies, we examined the overall effect of ECE on externalizing behavior problems and the differential effects of 3 levels of practice, each ...

Social welfare is one of the accepted goals of the United States and of the entire free world. Great interest attaches, therefore, both in this country and elsewhere, to the status of social wegare programs in the United States today. The standard of living and general welfare of the American people derive from the multiform activities of a free people, working individually, through voluntary g...