This study attempted to determine whether attendance at a traditional preschool resulted in significant cognitive gains for young children over a 3-year period. The experimental group consisted of 59 children at four preschools. Each was matched with a nonattender on such variables as age, sex, intelligence, and family characteristics. The mean…

Down Syndrome children (N=229), aged 1-83 months, from Australia, Canada, and Germany were tested using the Bayley Scales of Infant Development. Test performances on the Bayley's Mental and Motor scales were not dissimilar, leading to the conclusion that young Down Syndrome children from different countries with relatively comparable standards of…

This book starts with a review of the evolution of the notion of intelligence in its first chapter. In 1969, an article by psychologist Arthur R. Jensen suggested that there may be innate differences in intellectual potential between blacks and whites, and, if so, these differences should be taken into account in educational planning. The…