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…

Discusses a developmental approach to children's library services in which the communication element is essential to successful programing and reader's advisory, both of which provide opportunities for using communication techniques that are meaningful in the pattern of a child's intellectual development. The stages of development are outlined.…

Children in grades 1-3 were asked to retell and explain a series of riddles. Ability to recall riddles was not predictive of ability to explain them. Three cognitive factors seemed to determine level of riddle competence. Implications concern the relationship of riddle competence to reading ability and metalinguistic facility. (CHK)