Evidence from twin studies points to substantial environmental influences on intelligence, but the specifics of this influence are unclear. This study examined one developmental process that potentially causes intelligence differences: learning to read. In 1,890 twin pairs tested at 7, 9, 10, 12, and 16 years, a cross-lagged…

Several case histories of hyperlexic children whose abilities in word recognition are at a level significantly higher than their general level of intellectual functioning are described, and the impact of such a condition on the child is suggested as an object of research. In the sever"l cases presented, the hyperlexia re"ulted in environmental…

A review of the literature about reading instruction for ethnically different students discloses a body of information largely disconnected and biased. Numerous factors are alleged to be determinants of the reading retardation of such students. Generally, these fall into two categories: racial factors in intelligence and cultural deprivation. The…

Leading educational psychologists address problems in adult development and learning in this book. "What Does Educational Psychology Know about Adult Learning and Development?" (M. Cecil Smith, Thomas Pourchot) is the introduction. "We Learn, Therefore We Develop" (Nira Granott) tackles the problem of distinguishing between…