In a study of ways of preventing mental retardation in the population of a city slum, surveys were conducted. The major finding was that the variable of maternal intelligence was the best single predictor of the level and character of intellectual development in the offspring. The survey also showed that the lower the maternal IQ, the greater the…

An evaluation of the New York State Experimental Prekindergarten Program was begun in 1975 to provide longititudinal data on the effects of prekindergarten on children's development over a period of 5 years. Data were collected on a variety of items, including children's test performance at various times, family background, ratings by teachers,…