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
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
نویسندگان
, , ,