دانلود مقاله ISI انگلیسی شماره 64931
عنوان فارسی مقاله

کاهش سکولاری در هوش عمومی از ثبات رشد درحال کاهش: ملاحظات نظری و تجربی

کد مقاله سال انتشار مقاله انگلیسی ترجمه فارسی تعداد کلمات
64931 2016 6 صفحه PDF سفارش دهید محاسبه نشده
خرید مقاله
پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.
عنوان انگلیسی
The secular decline in general intelligence from decreasing developmental stability: Theoretical and empirical considerations
منبع

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

Journal : Personality and Individual Differences, Volume 92, April 2016, Pages 194–199

کلمات کلیدی
ثبات رشد؛ نوسان عدم تقارن؛ هوش عمومی؛ روند سکولار
پیش نمایش مقاله
پیش نمایش مقاله کاهش سکولاری در هوش عمومی از ثبات رشد درحال کاهش: ملاحظات نظری و تجربی

چکیده انگلیسی

The g-loss predicted based on genetic selection is smaller than that observed across various ratio-scale measures of cognitive ability. The difference may result in part from the accumulation of deleterious mutations across generations, reducing g via their effects on developmental stability/fitness. Previously published secular trend data on a developmental stability measure, craniofacial fluctuating asymmetry (FA) size, for white US males and females covering 14 and 15 decades respectively, are re-analysed. When the secular increases in FA size are rescaled as declines in latent developmental stability, and multiplied by the validity and reliability adjusted developmental stability-g correlation, g-losses of −.16 points per decade are predicted for the males, females and the combined sample. Predicted fitness losses due to mutation accumulation may account for 30% of the generational decline (−.05 points per decade), indicating only a small role for mutations in secular g-loss. The remaining 70% (−.11 points per decade) may result from developmental stability disrupting environmental change, such as increased exposure to pollutants. Adding these to the g-loss due to selection (re-estimated at −.54 points per decade) yields a combined decadal loss of −.70 points. Additional adjustments for replacement migration and the generation length-g interaction yield a larger magnitude decadal g-loss of − 1.25 points.

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پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.