کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7315489 | 1475475 | 2014 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Latent variable analysis indicates that seasonal anisotropy accounts for the higher prevalence of left-handedness in men
ترجمه فارسی عنوان
تجزیه و تحلیل متغیر وابسته نشان می دهد که عدم انحصار فصلی برای شیوع بیشتر چپ دست در مردان است
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کلمات کلیدی
دستیابی، کمال گرایی، تنوع فصلی، بی نهایت فصلی، تجزیه و تحلیل کلاس خوش آمدید،
موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
علوم اعصاب رفتاری
چکیده انگلیسی
According to the Geschwind-Galaburda theory of cerebral lateralization, high intrauterine testosterone levels delay left brain hemisphere maturation and thus promote left-handedness. Human circulating testosterone levels are higher in the male fetus and also vary with length of photoperiod. Therefore, a higher prevalence of left-handedness, coupled with seasonal anisotropy (i.e., a non-uniform distribution of handedness across birth months or seasons), may be expected among men. Prior studies yielded inconsistent evidence for seasonal anisotropy and suffered from confounding and a number of shortcomings affecting statistical power. This study examined hand preference and associations of handedness with sex, age, and season of birth in independent discovery (n = 7658) and replication (n = 5062) samples from Central Europe with latent class analysis (LCA). We found clear evidence of a surplus of left-handed men born during the period November-January, which is consistent with predictions from the Geschwind-Galaburda theory. Moreover, seasonal anisotropy fully accounted for the higher prevalence of left-handedness among men, relative to women. Implications of these findings with regard to seasonal anisotropy research and handedness assessment and classification are discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cortex - Volume 57, August 2014, Pages 188-197
Journal: Cortex - Volume 57, August 2014, Pages 188-197
نویسندگان
Ulrich S. Tran, Stefan Stieger, Martin Voracek,