Presents the results of an investigation of age trends in the development of ideational fluency among 7-to-12 year-olds in which verbal, figural, and Draw-a-Man tests were administered to school children in five groups at 1-year intervals between the ages of 7 and 12. A 13-item reference list is included. (Author/JL)

This paper describes a study which examined the performance of 48 pairs of 18-month-old twins on the Mental Development Scale of the Bayley Scales of Infant Development to determine whether score differences would be found for the three subgroups of identical, fraternal same-sexed, and fraternal opposite-sexed twins. Of the 96 subjects, 46 (23…

This extensively annotated bibliography supplements an article by Zana Stein and Mervyn Susser entitled "Mutability of Intelligence and Epidemiology of Mild Mental Retardation," appearing in "Review of Educational Research," Volume 40, Number 1, February 1970, pages 29-67. Resource materials listed focus on: the fate of…

Work with verbal autistic children has demonstrated phonological, syntactic, and semantic production defects which are not understandable solely in terms of a developmental lag, but also suggest aspects of atypical linguistic development. This investigation is a preliminary attempt to test not only the production, but also the perception, of…