[article] 
inJournal of Child Psychology and Psychiatry > 56-5 (May 2015) . - p.586-594

Titre :	Genetic and environmental contributions to anxiety among Chinese children and adolescents – a multi-informant twin study
Type de document :	Texte imprimé et/ou numérique
Auteurs :	Jie CHEN, Auteur ; Jing YU, Auteur ; Xinying LI, Auteur ; Jianxin ZHANG, Auteur
Article en page(s) :	p.586-594
Langues :	Anglais (eng)
Mots-clés :	Anxiety  Chinese children and adolescents  genetic and environmental influence  heritability  twin study
Index. décimale :	PER Périodiques
Résumé :	Background Child and adolescent anxiety has become a major public health concern in China, but little was known about the etiology of anxiety in Chinese children and adolescents. The present study aimed to investigate genetic and environmental influences on trait anxiety among Chinese children and adolescents. Rater, sex, and age differences on these estimates were also examined. Methods Self-reported and parent-reported child's trait anxiety was collected from 1,104 pairs of same-sex twins aged 9–18 years. Genetic models were fitted to data from each informant to determine the genetic (A), shared (C), and non-shared environmental (E) influences on trait anxiety. Results The parameter estimates and 95% confidence intervals (CI) of A, C, E on self-reported trait anxiety were 50% [30%, 60%], 5% [0%, 24%], 45% [40%, 49%]. For parent-reported data, the corresponding parameter estimates were 63% [47%, 78%], 13% [1%, 28%], and 24% [22%, 27%], respectively. The heritability of anxiety was higher in girls for self-reported data, but higher in boys for parent-reported data. There was no significant age difference in genetic and environmental contributions for self-reported data, but a significant increase of heritability with age for parent-reported data. Conclusions The trait anxiety in Chinese children and adolescents was highly heritable. Non-shared environmental factors also played an important role. The estimates of genetic and environmental effects differed by rater, sex and age. Our findings largely suggest the cross-cultural generalizability of the etiological model of child and adolescent anxiety.
En ligne :	http://dx.doi.org/10.1111/jcpp.12310
Permalink :	https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=260

[article] Genetic and environmental contributions to anxiety among Chinese children and adolescents – a multi-informant twin study [Texte imprimé et/ou numérique] / Jie CHEN, Auteur ; Jing YU, Auteur ; Xinying LI, Auteur ; Jianxin ZHANG, Auteur . - p.586-594.
Langues : Anglais (eng)
in Journal of Child Psychology and Psychiatry > 56-5 (May 2015) . - p.586-594

Mots-clés :	Anxiety  Chinese children and adolescents  genetic and environmental influence  heritability  twin study
Index. décimale :	PER Périodiques
Résumé :	Background Child and adolescent anxiety has become a major public health concern in China, but little was known about the etiology of anxiety in Chinese children and adolescents. The present study aimed to investigate genetic and environmental influences on trait anxiety among Chinese children and adolescents. Rater, sex, and age differences on these estimates were also examined. Methods Self-reported and parent-reported child's trait anxiety was collected from 1,104 pairs of same-sex twins aged 9–18 years. Genetic models were fitted to data from each informant to determine the genetic (A), shared (C), and non-shared environmental (E) influences on trait anxiety. Results The parameter estimates and 95% confidence intervals (CI) of A, C, E on self-reported trait anxiety were 50% [30%, 60%], 5% [0%, 24%], 45% [40%, 49%]. For parent-reported data, the corresponding parameter estimates were 63% [47%, 78%], 13% [1%, 28%], and 24% [22%, 27%], respectively. The heritability of anxiety was higher in girls for self-reported data, but higher in boys for parent-reported data. There was no significant age difference in genetic and environmental contributions for self-reported data, but a significant increase of heritability with age for parent-reported data. Conclusions The trait anxiety in Chinese children and adolescents was highly heritable. Non-shared environmental factors also played an important role. The estimates of genetic and environmental effects differed by rater, sex and age. Our findings largely suggest the cross-cultural generalizability of the etiological model of child and adolescent anxiety.
En ligne :	http://dx.doi.org/10.1111/jcpp.12310
Permalink :	https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=260