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GRAY, SUSAN W., and KLAUS, RUPERT A. The Early Training Project: A Seventh-Year Report. CHILD DEVELOPMENT, 1970, 41, 909-924. This is a report at the end of fourth grade of a preschool intervention project for children from low-income homes. Its purpose was to investigate whether one could offset progressive retardation in elementary school. Special experiences provided for the 44 experimental children were based upon variables associated with attitudes and aptitudes conducive to school achievement. Intensive work was done for 3 summers; in the remaining months there were weekly home visits. Over the years the experimental children remained significantly superior to control children on intelligence tests. On measures of language and achievement, trends still remained, but differences were no longer significant by the end of fourth grade. There is a slight but parallel decline across groups. Evidence is presented on younger siblings.
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