Display Settings:

Format

Send to:

Choose Destination
We are sorry, but NCBI web applications do not support your browser and may not function properly. More information
    Behav Genet. 2009 Jul;39(4):359-70. doi: 10.1007/s10519-009-9262-3. Epub 2009 Apr 21.

    A twin study of the genetics of high cognitive ability selected from 11,000 twin pairs in six studies from four countries.

    Source

    Social, Genetic and Developmental Psychiatry Centre, Institute of Psychiatry, King's College London, London, UK.

    Abstract

    Although much genetic research has addressed normal variation in intelligence, little is known about the etiology of high cognitive abilities. Using data from 11,000 twin pairs (age range = 6-71 years) from the genetics of high cognitive abilities consortium, we investigated the genetic and environmental etiologies of high general cognitive ability (g). Age-appropriate psychometric cognitive tests were administered to the twins and used to create g scores standardized within each study. Liability-threshold model fitting was used to estimate genetic and environmental parameters for the top 15% of the distribution of g. Genetic influence for high g was substantial (0.50, with a 95% confidence interval of 0.41-0.60). Shared environmental influences were moderate (0.28, 0.19-0.37). We conclude that genetic variation contributes substantially to high g in Australia, the Netherlands, the United Kingdom and the United States.

    PMID:
    19381794
    [PubMed - indexed for MEDLINE]
    PMCID:
    PMC2740717
    Free PMC Article

    Publication Types, MeSH Terms, Grant Support

    Publication Types

    MeSH Terms

    Grant Support

      Supplemental Content

      Icon for Springer Icon for PubMed Central

      Save items

      Recent activity

      Your browsing activity is empty.

      Activity recording is turned off.

      Turn recording back on

      See more...
      Write to the Help Desk