title: The Raven's progressive matrices: change and stability over culture and time.
abstract: Data relating to the stability and variation in the norms for the Raven's Progressive Matrices Test (a well-validated measure of basic cognitive functioning) for different cultural, ethnic, and socioeconomic groups on a worldwide and within-country basis are first summarized. Subsequent sections deal with variation over time. A possible explanation for the variation in norms over time and between ethnic groups within countries is offered.
authors.affiliation: 30 Great King Street, Edinburgh, EH3 6QH, Scotland.
authors.forename: J
authors.initials: J
authors.lastname: Raven
mesh_terms: D002648:Child; D003469:Culture; D006801:Humans; D007361:Intelligence Tests; D009483:Neuropsychological Tests; D013997:Time Factors