Data from the national standardization of the French version of the WISC-III were analyzed to determine when during childhood the IQ-related process of differentiation appears and how the strength of the relationships among subtests evolves with age in low- and high-IQ groups. Indeed, some recent studies suggest that age might moderate the effect…

Two studies investigated developmental changes, and inter-linguistic and inter-individual variations, in the expansion and composition of young French children's early lexicons. Results indicated that lexical productivity strongly increased with age, whereas lexical diversity showed little developmental progression. Inter-individual variability in…