title: The age-range illusion in developmental research on the structure of abilities: a comment on Lis and Magro.
abstract: The general effect of age range on findings from studies of the structure of intellectual abilities in children is considered. Two topical examples of the effect in the work of Lis and Magro and that of Demetriou and Efklides are considered.
authors.affiliation: School of Education, La Trobe University, Bundoora, Victoria, Australia.
authors.forename: P
authors.initials: P
authors.lastname: Langford
mesh_terms: D000293:Adolescent; D001076:Aptitude; D002648:Child; D002657:Child Development; D006801:Humans; D007361:Intelligence Tests / Q000706:statistics & numerical data*; D011594:Psychometrics; D015203:Reproducibility of Results