دانلود مقاله ISI انگلیسی شماره 64937
عنوان فارسی مقاله

عقل ما چگونه شکننده است؟ زیان برآورد در هوش عمومی با توجه به هر دو انباشت انتخاب و جهش

کد مقاله سال انتشار مقاله انگلیسی ترجمه فارسی تعداد کلمات
64937 2015 5 صفحه PDF سفارش دهید محاسبه نشده
خرید مقاله
پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.
عنوان انگلیسی
How fragile is our intellect? Estimating losses in general intelligence due to both selection and mutation accumulation
منبع

Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)

Journal : Personality and Individual Differences, Volume 75, March 2015, Pages 80–84

کلمات کلیدی
انباشت جهش - انتخاب؛ تعمیم اعتبار
پیش نمایش مقاله
پیش نمایش مقاله عقل ما چگونه شکننده است؟ زیان برآورد در هوش عمومی با توجه به هر دو انباشت انتخاب و جهش

چکیده انگلیسی

Two dysgenic models of declining general intelligence have been proposed. The first posits that since the Industrial Revolution those with low g have had a reproductive advantage over those with high g. The second posits that relaxed purifying selection against deleterious mutations in modern populations has led to g declining due to mutation accumulation. Here, a meta-analytic estimate of the decline due to selection is computed across nine US and UK studies, revealing a loss of .39 points per decade (combined N = 202,924). By combining findings from a high-precision study of the effects of paternal age on offspring g with a study of paternal age and offspring de novo mutation numbers, it is proposed that, 70 de novo mutations per familial generation should reduce offspring g by 2.94 points, or .84 points per decade. Combining the selection and mutation accumulation losses yields a potential overall dysgenic loss of 1.23 points per decade, with upper and lower bound values ranging from 1.92 to .53 points per decade. This estimate is close to those from studies employing the secular slowing of simple reaction time as a potential indicator of declining g, consistent with predictions that mutation accumulation may play a role in these findings.

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