Jaeggi and her colleagues claimed that they were able to improve fluid intelligence by training working memory. Subjects who trained their working memory on a dual n-back task for a period of time showed significant improvements in working memory span tasks and fluid intelligence tests such as the Raven's Progressive Matrices and the Bochumer…

This study is concerned with the preschool and kindergarten phases of an ongoing longitudinal investigation of effects of preschool on educationally advantaged children. Preschool data including demographics, IQ, social competency, and school readiness are reported. Although social competency was enhanced by preschool, gains occurred for both…

A multi-session training approach attempted to teach mildly retarded adolescents to discover and utilize categorical list structure. Recall transfer with new word lists was demonstrated. Differences in use of categorization strategies by normal and retarded adolescents were interpreted in terms of the automatic controlled processing distinction.…

H.H. Spitz argues that interesting results from the preschool intervention of the Abecedarian Project continue to be disregarded. C.T. Ramey reiterates his earlier objections to Spitz's conclusions, and H.H. Spitz rejoins with specific objections to Ramey. (SLD)

Infants judged to be at risk for subnormal intellectual growth were randomly assigned to experimental and control groups which varied as to educational curriculum activities. Two types of evidence, group differences and parent-child IQ correlations, demonstrate the importance of early environments in intellectual development. (Author/RD)