Puberty timing and fluid intelligence: A study of correlations between testosterone and intelligence in 8-to 12-year-old Chinese boys

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	Puberty timing and fluid intelligence: A study of correlations between testosterone and intelligence in 8-to 12-year-old Chinese boys
	Shangguan, Fangfang 1,2; Shi, Jiannong1 ; J. N. Shi
摘要	Sex hormone such as testosterone was recently recognized as an important contributor of spatial cognition and intelligence during development, but the relationship between puberty timing and intelligence especially in children is largely unknown. Here in this study, we investigated the potential relationship between the level of sex hormones in saliva and fluid intelligence in 8- to 12-year-old Chinese boys. Fluid intelligence was measured by the Cattell's Culture Fair Intelligence Test. 1600 children aged 8-12 years were included in the Cattell's Culture Fair Intelligence Test and saliva samples were collected thereafter from 166 boys with normal intelligence distribution, composed of 49, 54 and 63 boys in 8-, 10- and 12-year-old group respectively. The level of salivary testosterone and estradiol was measured with enzyme-immunoassay technique. Data of BMI and age were collected. The relationship between the level of salivary sex hormones and fluid intelligence was analysed by correlation test. There was no significant correlation between salivary testosterone level. and fluid intelligence in 8-year-old boys, whereas there was a significant positive correlation in 10-year-old boys and a significant negative correlation in 12-year-old boys between those two variable. To verify the correlation, we performed stepwise multivariate linear regression and discriminant analysis, with both the age and BMI of the boys and their parents, and salivary estradiol level considered. The results showed that the level of testosterone and intelligence was correlated, and the correlation was much stronger when the level of salivary testosterone was higher than 14 pg/ml. In summary, the study suggests that the relationship of testosterone and intelligence varies from late childhood to early adolescence, and the puberty timing is closely related with fluid intelligence.; Sex hormone such as testosterone was recently recognized as an important contributor of spatial cognition and intelligence during development, but the relationship between puberty timing and intelligence especially in children is largely unknown. Here in this study, we investigated the potential relationship between the level of sex hormones in saliva and fluid intelligence in 8- to 12-year-old Chinese boys. Fluid intelligence was measured by the Cattell's Culture Fair Intelligence Test. 1600 children aged 8-12 years were included in the Cattell's Culture Fair Intelligence Test and saliva samples were collected thereafter from 166 boys with normal intelligence distribution, composed of 49, 54 and 63 boys in 8-, 10- and 12-year-old group respectively. The level of salivary testosterone and estradiol was measured with enzyme-immunoassay technique. Data of BMI and age were collected. The relationship between the level of salivary sex hormones and fluid intelligence was analysed by correlation test. There was no significant correlation between salivary testosterone level. and fluid intelligence in 8-year-old boys, whereas there was a significant positive correlation in 10-year-old boys and a significant negative correlation in 12-year-old boys between those two variable. To verify the correlation, we performed stepwise multivariate linear regression and discriminant analysis, with both the age and BMI of the boys and their parents, and salivary estradiol level considered. The results showed that the level of testosterone and intelligence was correlated, and the correlation was much stronger when the level of salivary testosterone was higher than 14 pg/ml. In summary, the study suggests that the relationship of testosterone and intelligence varies from late childhood to early adolescence, and the puberty timing is closely related with fluid intelligence. (C) 2009 Elsevier Ltd. All rights reserved.
关键词	Fluid intelligence Saliva Testosterone and estradiol Late childhood Early adolescence Chinese
学科领域	发展心理学
	2009-08-01
语种	英语
发表期刊	PSYCHONEUROENDOCRINOLOGY
ISSN	0306-4530
卷号	34 期号:7 页码:983-988
期刊论文类型	Article
收录类别	SCI ; SSCI
WOS记录号	WOS:000267471900004
引用统计	被引频次：14[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.psych.ac.cn/handle/311026/5651
专题	中国科学院心理研究所回溯数据库(1956-2010)
通讯作者	J. N. Shi
作者单位	1.Chinese Acad Sci, Inst Psychol, Ctr Human Dev & Educ, Beijing, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Shangguan, Fangfang,Shi, Jiannong,J. N. Shi. Puberty timing and fluid intelligence: A study of correlations between testosterone and intelligence in 8-to 12-year-old Chinese boys[J]. PSYCHONEUROENDOCRINOLOGY,2009,34(7):983-988.
APA	Shangguan, Fangfang,Shi, Jiannong,&J. N. Shi.(2009).Puberty timing and fluid intelligence: A study of correlations between testosterone and intelligence in 8-to 12-year-old Chinese boys.PSYCHONEUROENDOCRINOLOGY,34(7),983-988.
MLA	Shangguan, Fangfang,et al."Puberty timing and fluid intelligence: A study of correlations between testosterone and intelligence in 8-to 12-year-old Chinese boys".PSYCHONEUROENDOCRINOLOGY 34.7(2009):983-988.

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