Intellectual development of adolescents and pre-adolescents from psychometric and cognitive developmental perspectives, 1985-1988: File rs6

The aim of this study was to conduct a part longitudinal and part cross-sectional study of the rate of growth of intellectual capacity of individuals, and in particular to determine: the nature of the development on a test set in the psychometric tradition and scaled to subscribe to the fundamental measurement; the relationship of this development to development ascertained from the cognitive developmental tradition associated with the work of Piaget; and the relationship of cognitive development in what are termed the social and physical domains. An extended test analogous to the Raven's (ACER 1958) Progressive Matrices Tests were used. Variables coded in each data set include gender and scored responses to the Raven's items administered at each testing session. The final data file contains information regarding the initial age of the subjects and their heights across all 6 testing sessions.