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Schooling and variation in the COMT gene: the devil is in the details / Daniel B. CAMPBELL in Journal of Child Psychology and Psychiatry, 54-10 (October 2013)
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Titre : Schooling and variation in the COMT gene: the devil is in the details Type de document : Texte imprimé et/ou numérique Auteurs : Daniel B. CAMPBELL, Auteur ; Johanna BICK, Auteur ; Carolyn M. YRIGOLLEN, Auteur ; Maria LEE, Auteur ; Antony JOSEPH, Auteur ; Joseph T. CHANG, Auteur ; Elena L. GRIGORENKO, Auteur ; LEARNING DISABILITIES PROJECT ZAMBIA,, Auteur Article en page(s) : p.1056-1065 Langues : Anglais (eng) Mots-clés : Schooling nonverbal intelligence the COMT gene haplotype analysis haplo.glm interaction effects Index. décimale : PER Périodiques Résumé : Background Schooling is considered one of the major contributors to the development of intelligence within societies and individuals. Genetic variation might modulate the impact of schooling and explain, at least partially, the presence of individual differences in classrooms. Method We studied a sample of 1,502 children (mean age = 11.7 years) from Zambia. Approximately 57% of these children were enrolled in school, and the rest were not. To quantify genetic variation, we investigated a number of common polymorphisms in the catechol-O-methyltransferase (COMT) gene that controls the production of the protein thought to account for 60% of the dopamine degradation in the prefrontal cortex. Results Haplotype analyses generated results ranging from the presence to absence of significant interactions between a number of COMT haplotypes and indicators of schooling (i.e., in- vs. out-of-school and grade completed) in the prediction of nonverbal intelligence, depending on the parameter specification. However, an investigation of the distribution of corresponding p-values suggested that these positive results were false. Conclusions Convincing evidence that the variation in the COMT gene is associated with individual differences in nonverbal intelligence either directly or through interactions with schooling was not found. p-values produced by the method of testing for haplotype effects employed here may be sensitive to parameter settings, invalid under default settings, and should be checked for validity through simulation. En ligne : http://dx.doi.org/10.1111/jcpp.12120 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=212
in Journal of Child Psychology and Psychiatry > 54-10 (October 2013) . - p.1056-1065[article] Schooling and variation in the COMT gene: the devil is in the details [Texte imprimé et/ou numérique] / Daniel B. CAMPBELL, Auteur ; Johanna BICK, Auteur ; Carolyn M. YRIGOLLEN, Auteur ; Maria LEE, Auteur ; Antony JOSEPH, Auteur ; Joseph T. CHANG, Auteur ; Elena L. GRIGORENKO, Auteur ; LEARNING DISABILITIES PROJECT ZAMBIA,, Auteur . - p.1056-1065.
Langues : Anglais (eng)
in Journal of Child Psychology and Psychiatry > 54-10 (October 2013) . - p.1056-1065
Mots-clés : Schooling nonverbal intelligence the COMT gene haplotype analysis haplo.glm interaction effects Index. décimale : PER Périodiques Résumé : Background Schooling is considered one of the major contributors to the development of intelligence within societies and individuals. Genetic variation might modulate the impact of schooling and explain, at least partially, the presence of individual differences in classrooms. Method We studied a sample of 1,502 children (mean age = 11.7 years) from Zambia. Approximately 57% of these children were enrolled in school, and the rest were not. To quantify genetic variation, we investigated a number of common polymorphisms in the catechol-O-methyltransferase (COMT) gene that controls the production of the protein thought to account for 60% of the dopamine degradation in the prefrontal cortex. Results Haplotype analyses generated results ranging from the presence to absence of significant interactions between a number of COMT haplotypes and indicators of schooling (i.e., in- vs. out-of-school and grade completed) in the prediction of nonverbal intelligence, depending on the parameter specification. However, an investigation of the distribution of corresponding p-values suggested that these positive results were false. Conclusions Convincing evidence that the variation in the COMT gene is associated with individual differences in nonverbal intelligence either directly or through interactions with schooling was not found. p-values produced by the method of testing for haplotype effects employed here may be sensitive to parameter settings, invalid under default settings, and should be checked for validity through simulation. En ligne : http://dx.doi.org/10.1111/jcpp.12120 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=212