A twin study of genetic effects on intelligence development of children and adolescents

VernacularTitle:遗传对儿童青少年智力发育影响的双生子研究
Author: Xiaomei HU ; Yixiao FU ; Xingshun MA ; Xiao HOU ; Yingqing ZHOU ; Wenfen ZHU ; Huaqing MENG ; Lu JIA ; Qing QING ; Wei DENG ; Tao LI ; Yingcheng WANG
Publication Type:Journal Article
Keywords: twins; heritability; intelligence development
From: Chongqing Medicine 2014;(4):394-395,398
CountryChina
Language:Chinese
Abstract: Objective Using twins methods to explore the influence of genetic and environmental factor on Intelligence develop-ment of children and adolescent twins .Methods It was 190 pair of twins aged 6 to 18 who lived in Chongqing were recruited ,DNA were extracted from buccal mucosa and venous blood samples to identify zygosity .The intelligence was investigated by using the Wechsler Intelligence Scale for Children(C-WISC) ,the intrapair correlation coefficients of twins were compared and calculate the genetic degrees .Results The total IQ of children aged 6 to 18 heritability were 0 .63 ,Verbal IQ were 0 .44 ,Performance IQ were 0 .57 .The total IQ heritability of children aged 10 to 14 and 15 to 18 years(0 .78 ,0 .79) were higher than that of those aged from 6 to 9 years(0 .018) .Conclusion This study suggested the intelligence of children aged 6 to 18 affected by genetic and environment , and the older ,the more influence of genetic on intelligence development .