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Age-related IQ decline is reduced markedly after adjustment for the Flynn effect.

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Title: Age-related IQ decline is reduced markedly after adjustment for the Flynn effect.
Authors: Dickinson, MercedesD. (AUTHOR), Hiscock, Merrill (AUTHOR)
Source: Journal of Clinical & Experimental Neuropsychology. Oct2010, Vol. 32 Issue 8, p865-870. 6p. 1 Diagram, 2 Charts, 1 Graph.
Subjects: Aging, Flynn effect, Gerontology, Intellect, Wechsler Adult Intelligence Scale, Standard deviations, Statistics
Abstract: Twenty-year-olds outperform 70-year-olds by as much as 2.3 standard deviations (35 IQ points) on subtests of the Wechsler Adult Intelligence Scale (WAIS). We show that most of the difference can be attributed to an intergenerational rise in IQ known as the Flynn effect. Normative data from different versions of the WAIS enabled us to estimate the degree to which the Flynn effect, rather than age-related decline, contributes to differences between 20- and 70-year-olds. The Flynn effect accounted for 38-67% of the apparent age-related decline on 6 of the 11 subtests. On the other 5 subtests, all of which are categorized as verbal, the Flynn effect was larger than the age-group difference. For these verbal subtests, the Flynn effect masked a modest increase in ability as individuals grow older. Overall, the Flynn effect accounted for at least 85% of the disparity between 20- and 70-year-olds. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Clinical & Experimental Neuropsychology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
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  Data: Age-related IQ decline is reduced markedly after adjustment for the Flynn effect.
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  Data: <searchLink fieldCode="AR" term="%22Dickinson%2C+MercedesD%2E%22">Dickinson, MercedesD.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Hiscock%2C+Merrill%22">Hiscock, Merrill</searchLink> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Clinical+%26+Experimental+Neuropsychology%22">Journal of Clinical & Experimental Neuropsychology</searchLink>. Oct2010, Vol. 32 Issue 8, p865-870. 6p. 1 Diagram, 2 Charts, 1 Graph.
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  Data: <searchLink fieldCode="DE" term="%22Aging%22">Aging</searchLink><br /><searchLink fieldCode="DE" term="%22Flynn+effect%22">Flynn effect</searchLink><br /><searchLink fieldCode="DE" term="%22Gerontology%22">Gerontology</searchLink><br /><searchLink fieldCode="DE" term="%22Intellect%22">Intellect</searchLink><br /><searchLink fieldCode="DE" term="%22Wechsler+Adult+Intelligence+Scale%22">Wechsler Adult Intelligence Scale</searchLink><br /><searchLink fieldCode="DE" term="%22Standard+deviations%22">Standard deviations</searchLink><br /><searchLink fieldCode="DE" term="%22Statistics%22">Statistics</searchLink>
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  Label: Abstract
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  Data: Twenty-year-olds outperform 70-year-olds by as much as 2.3 standard deviations (35 IQ points) on subtests of the Wechsler Adult Intelligence Scale (WAIS). We show that most of the difference can be attributed to an intergenerational rise in IQ known as the Flynn effect. Normative data from different versions of the WAIS enabled us to estimate the degree to which the Flynn effect, rather than age-related decline, contributes to differences between 20- and 70-year-olds. The Flynn effect accounted for 38-67% of the apparent age-related decline on 6 of the 11 subtests. On the other 5 subtests, all of which are categorized as verbal, the Flynn effect was larger than the age-group difference. For these verbal subtests, the Flynn effect masked a modest increase in ability as individuals grow older. Overall, the Flynn effect accounted for at least 85% of the disparity between 20- and 70-year-olds. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Journal of Clinical & Experimental Neuropsychology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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    Identifiers:
      – Type: doi
        Value: 10.1080/13803391003596413
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      – Code: eng
        Text: English
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        PageCount: 6
        StartPage: 865
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      – SubjectFull: Aging
        Type: general
      – SubjectFull: Flynn effect
        Type: general
      – SubjectFull: Gerontology
        Type: general
      – SubjectFull: Intellect
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      – SubjectFull: Wechsler Adult Intelligence Scale
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      – SubjectFull: Standard deviations
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      – SubjectFull: Statistics
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      – TitleFull: Age-related IQ decline is reduced markedly after adjustment for the Flynn effect.
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            NameFull: Dickinson, MercedesD.
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              Text: Oct2010
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              Y: 2010
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