Childhood peer network characteristics: genetic influences and links with early mental health trajectories / Eszter SZEKELY in Journal of Child Psychology and Psychiatry, 57-6 (June 2016)  

Public ISBD [article]  inJournal of Child Psychology and Psychiatry > 57-6 (June 2016) . - p.687-694 Titre : Childhood peer network characteristics: genetic influences and links with early mental health trajectories Type de document : Texte imprimé et/ou numérique Auteurs : Eszter SZEKELY, Auteur ; Irene PAPPA, Auteur ; James D. WILSON, Auteur ; Shankar BHAMIDI, Auteur ; Vincent W.V. JADDOE, Auteur ; Frank C. VERHULST, Auteur ; Henning TIEMEIER, Auteur ; Philip SHAW, Auteur Article en page(s) : p.687-694 Langues : Anglais (eng) Mots-clés : Heritability  peer networks  externalizing  internalizing  preschoolers Index. décimale : PER Périodiques Résumé : Background Peer relationships are important for children's mental health, yet little is known of their etiological underpinnings. Here, we explore the genetic influences on childhood peer network characteristics in three different networks defined by rejection, acceptance, and prosocial behavior. We further examine the impact of early externalizing and internalizing trajectories on these same peer network characteristics. Methods Participants were 1,288 children from the Dutch ‘Generation R’ birth cohort. At age 7, we mapped out children's classroom peer networks for peer rejection, acceptance, and prosocial behavior using mutual peer nominations. In each network, genetic influences were estimated for children's degree centrality, closeness centrality and link reciprocity from DNA using Genome-wide Complex Trait Analysis. Preschool externalizing and internalizing trajectories were computed using parental ratings at ages 1.5, 3, and 5 years. Results Of the three network properties examined, closeness centrality emerged as significantly heritable across all networks. Preschool externalizing problems predicted unfavorable positions within peer rejection networks and having fewer mutual friendships. In contrast, children with preschool-internalizing problems were not actively rejected by their peers, but were less well-connected within their social support network. Conclusions Our finding of significant heritability for closeness centrality should be taken as preliminary evidence that requires replication. Nevertheless, it can orient us to the role of genes in shaping a child's position within peer networks. Additionally, social network perspectives offer rich insights into how early life mental health trajectories impact a child's later functioning within peer networks. En ligne : http://dx.doi.org/10.1111/jcpp.12493 Permalink : http://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=2894 [article] Childhood peer network characteristics: genetic influences and links with early mental health trajectories [Texte imprimé et/ou numérique] / Eszter SZEKELY, Auteur ; Irene PAPPA, Auteur ; James D. WILSON, Auteur ; Shankar BHAMIDI, Auteur ; Vincent W.V. JADDOE, Auteur ; Frank C. VERHULST, Auteur ; Henning TIEMEIER, Auteur ; Philip SHAW, Auteur . - p.687-694. Langues : Anglais (eng) in Journal of Child Psychology and Psychiatry > 57-6 (June 2016) . - p.687-694 Mots-clés : Heritability  peer networks  externalizing  internalizing  preschoolers Index. décimale : PER Périodiques Résumé : Background Peer relationships are important for children's mental health, yet little is known of their etiological underpinnings. Here, we explore the genetic influences on childhood peer network characteristics in three different networks defined by rejection, acceptance, and prosocial behavior. We further examine the impact of early externalizing and internalizing trajectories on these same peer network characteristics. Methods Participants were 1,288 children from the Dutch ‘Generation R’ birth cohort. At age 7, we mapped out children's classroom peer networks for peer rejection, acceptance, and prosocial behavior using mutual peer nominations. In each network, genetic influences were estimated for children's degree centrality, closeness centrality and link reciprocity from DNA using Genome-wide Complex Trait Analysis. Preschool externalizing and internalizing trajectories were computed using parental ratings at ages 1.5, 3, and 5 years. Results Of the three network properties examined, closeness centrality emerged as significantly heritable across all networks. Preschool externalizing problems predicted unfavorable positions within peer rejection networks and having fewer mutual friendships. In contrast, children with preschool-internalizing problems were not actively rejected by their peers, but were less well-connected within their social support network. Conclusions Our finding of significant heritability for closeness centrality should be taken as preliminary evidence that requires replication. Nevertheless, it can orient us to the role of genes in shaping a child's position within peer networks. Additionally, social network perspectives offer rich insights into how early life mental health trajectories impact a child's later functioning within peer networks. En ligne : http://dx.doi.org/10.1111/jcpp.12493 Permalink : http://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=2894

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