The impact of childhood intelligence on later life: Following up the Scottish Mental Surveys of 1932 and 1947

I. J. Deary, M. Whiteman, J. M. Starr, Lawrence Jeffrey Whalley, Helen Catherine Fox

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    544 Citations (Scopus)

    Abstract

    The Scottish Mental Surveys of 1932 and 1947 collected valid IQ-type test scores for almost everyone born in 1921 and 1936 and attending school on June 1, 1932 (N = 89,498) and June 4, 1947 (N = 70.805). These surveys are described. This research, using the surveys' data, examined (a) the stability of intelligence differences across the life span, (b) the determinants of cognitive change from childhood to old age, and (c) the impact of childhood intelligence on survival and health in old age. Surviving participants of the Scottish Mental Surveys were tested, and the surveys' data were linked with public and health records. Novel findings on the stability of IQ scores from age I I to age 80; sex differences in cognitive aging; the dedifferentiation hypothesis of cognitive aging; and the effect of childhood IQ on all-cause and specific mortality, morbidity, and frailty in old age are presented.

    Original languageEnglish
    Pages (from-to)130-147
    Number of pages17
    JournalJournal of Personality and Social Psychology
    Volume86
    Issue number1
    DOIs
    Publication statusPublished - Jan 2004

    Keywords

    • PRESENILE ALZHEIMERS-DISEASE
    • FETAL-ORIGINS HYPOTHESIS
    • HEALTHY OLD-PEOPLE
    • LOW-BIRTH-WEIGHT
    • COGNITIVE FUNCTION
    • APOLIPOPROTEIN-E
    • SOCIAL-CLASS
    • ADULT LIFE
    • PSYCHOSOCIAL FACTORS
    • EDUCATIONAL-LEVEL

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