This study investigated intellectual development in 4-7 years old Greek and Chinese children. They were examined on speeded performance, working memory, reasoning, and self-awareness tasks in order to investigate possible effects of learning the Chinese logographic system on possible differences in intellectual development between these ethnic…

Although the Flynn Effect has been studied widely across cultural, geographic, and intellectual domains, and many explanatory theories have been proposed, little past research attention has been paid to subgroup differences. Rodgers and Wanstrom (2007) identified an aggregate-level Flynn Effect (FE) at each age between 5 and 13 in the Children of…

Two experiments compared recognition memory of 85 nonretarded and 85 mildly mentally retarded adolescents immediately and 1 week after presentation of word stimuli of semantic incidental, nonsemantic incidental, or intentional orienting instructions. Results suggest similar processing in mildly retarded and nonretarded persons, with longer…

Data of Skodak and Skeels (1949) are reinterpreted to suggest that at least one-third of the reported advantage of adopted children's intelligence quotients (IQ) over adoptive mothers is an artifact of the IQ test norms. The children's mean IQ could easily be higher than the estimated figures usually quoted. (SLD)

The differences between learning disabled (LD) and non-LD children's problem-solving protocols were analyzed during a picture arrangement task. Although the groups of 29 LD and 27 non-LD children were comparable in global mental processing and task performance, LD children had difficulty with representing problems and deleting irrelevant…

The relationship of intelligence to strategy training, maintenance, and transfer was studied for six intellectually gifted, six average, and six mentally retarded children taught a balance-scale problem strategy. Implications of the finding that the mentally retarded needed more training and were poorer at maintenance and transfer are discussed.…