Early life predictors of intelligence in young adulthood and middle age.

Autor: Flensborg-Madsen T; Unit of Medical Psychology, Department of Public Health, University of Copenhagen, Copenhagen, Denmark.; Center for Healthy Aging, University of Copenhagen, Copenhagen, Denmark., Falgreen Eriksen HL; Unit of Medical Psychology, Department of Public Health, University of Copenhagen, Copenhagen, Denmark., Mortensen EL; Unit of Medical Psychology, Department of Public Health, University of Copenhagen, Copenhagen, Denmark.; Center for Healthy Aging, University of Copenhagen, Copenhagen, Denmark.
Jazyk: angličtina
Zdroj: PloS one [PLoS One] 2020 Jan 28; Vol. 15 (1), pp. e0228144. Date of Electronic Publication: 2020 Jan 28 (Print Publication: 2020).
DOI: 10.1371/journal.pone.0228144
Abstrakt: Background: Studies on early predictors of intelligence often focus on single or few predictors and often on childhood intelligence. This study compared the contributions of a broad selection of potential early predictors of intelligence at different adult ages.
Methods: Information on predictors was recorded prospectively in the Copenhagen Perinatal Cohort during pregnancy, at delivery, and at 1- and 3-year examinations for children born between 1959-61. Adult intelligence was assessed at three independent follow-ups using three different tests of intelligence: Børge Priens Prøve, Wechsler Adult Intelligence Scale, and Intelligenz-Struktur-Test 2000R. From a total of 4697 cohort members, three non-overlapping samples were derived.
Results: The included predictors explained between 22.2-24.3% of the variance in adult IQ, with parental socioeconomic status and sex explaining 16.2-17.0%. Other consistent predictors were head circumference at birth, increase in head circumference head during the first three years, and 3-year milestones. Head circumference was the most important anthropometric measure compared to measures of weight and length.
Conclusion: Besides social status and sex, the strongest and most consistent early predictors of adult intelligence were physical or behavioural characteristics that to some extent reflect brain-and cognitive development.
Competing Interests: The authors have declared that no competing interests exist.
Databáze: MEDLINE
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