Expanding the environment: gene × school-level SES interaction on reading comprehension / Sara A. HART in Journal of Child Psychology and Psychiatry, 54-10 (October 2013)  

Public ISBD [article]  inJournal of Child Psychology and Psychiatry > 54-10 (October 2013) . - p.1047-1055 Titre : Expanding the environment: gene × school-level SES interaction on reading comprehension Type de document : Texte imprimé et/ou numérique Auteurs : Sara A. HART, Auteur ; Brooke SODEN, Auteur ; Wendy JOHNSON, Auteur ; Christopher SCHATSCHNEIDER, Auteur ; Jeanette TAYLOR, Auteur Article en page(s) : p.1047-1055 Langues : Anglais (eng) Mots-clés : Reading comprehension  G × E interaction  school-level SES  bioecological model Index. décimale : PER Périodiques Résumé : Background Influential work has explored the role of family socioeconomic status (SES) as an environmental moderator of genetic and environmental influences on cognitive outcomes. This work has provided evidence that socioeconomic circumstances differentially impact the heritability of cognitive abilities, generally supporting the bioecological model in that genetic influences are greater at higher levels of family SES. The present work expanded consideration of the environment, using school-level SES as a moderator of reading comprehension. Methods The sample included 577 pairs of twins from the Florida Twin Project on Reading, Behavior and Environment. Reading comprehension was measured by the Florida Comprehensive Achievement Test (FCAT) Reading in third or fourth grade. School-level SES was measured by the mean Free and Reduced Lunch Status (FRLS) of the schoolmates of the twins. Results The best-fitting univariate G × E moderation model indicated greater genetic influences on reading comprehension when fewer schoolmates qualified for FRLS (i.e., ‘higher’ school-level SES). There was also an indication of moderation of the shared environment; there were greater shared environmental influences on reading comprehension at higher school-level SES. Conclusions The results supported the bioecological model; greater genetic variance was found in school environments in which student populations experienced less poverty. In general, ‘higher’ school-level SES allowed genetic and probably shared environmental variance to contribute as sources of individual differences in reading comprehension outcomes. Poverty suppresses these influences. En ligne : http://dx.doi.org/10.1111/jcpp.12083 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=212 [article] Expanding the environment: gene × school-level SES interaction on reading comprehension [Texte imprimé et/ou numérique] / Sara A. HART, Auteur ; Brooke SODEN, Auteur ; Wendy JOHNSON, Auteur ; Christopher SCHATSCHNEIDER, Auteur ; Jeanette TAYLOR, Auteur . - p.1047-1055. Langues : Anglais (eng) in Journal of Child Psychology and Psychiatry > 54-10 (October 2013) . - p.1047-1055 Mots-clés : Reading comprehension  G × E interaction  school-level SES  bioecological model Index. décimale : PER Périodiques Résumé : Background Influential work has explored the role of family socioeconomic status (SES) as an environmental moderator of genetic and environmental influences on cognitive outcomes. This work has provided evidence that socioeconomic circumstances differentially impact the heritability of cognitive abilities, generally supporting the bioecological model in that genetic influences are greater at higher levels of family SES. The present work expanded consideration of the environment, using school-level SES as a moderator of reading comprehension. Methods The sample included 577 pairs of twins from the Florida Twin Project on Reading, Behavior and Environment. Reading comprehension was measured by the Florida Comprehensive Achievement Test (FCAT) Reading in third or fourth grade. School-level SES was measured by the mean Free and Reduced Lunch Status (FRLS) of the schoolmates of the twins. Results The best-fitting univariate G × E moderation model indicated greater genetic influences on reading comprehension when fewer schoolmates qualified for FRLS (i.e., ‘higher’ school-level SES). There was also an indication of moderation of the shared environment; there were greater shared environmental influences on reading comprehension at higher school-level SES. Conclusions The results supported the bioecological model; greater genetic variance was found in school environments in which student populations experienced less poverty. In general, ‘higher’ school-level SES allowed genetic and probably shared environmental variance to contribute as sources of individual differences in reading comprehension outcomes. Poverty suppresses these influences. En ligne : http://dx.doi.org/10.1111/jcpp.12083 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=212

Who is afraid of math? Two sources of genetic variance for mathematical anxiety / Zhe WANG in Journal of Child Psychology and Psychiatry, 55-9 (September 2014)  

Public ISBD [article]  inJournal of Child Psychology and Psychiatry > 55-9 (September 2014) . - p.1056-1064 Titre : Who is afraid of math? Two sources of genetic variance for mathematical anxiety Type de document : Texte imprimé et/ou numérique Auteurs : Zhe WANG, Auteur ; Sara Ann HART, Auteur ; Yulia KOVAS, Auteur ; Sarah LUKOWSKI, Auteur ; Brooke SODEN, Auteur ; Lee A. THOMPSON, Auteur ; Robert PLOMIN, Auteur ; Gráinne MCLOUGHLIN, Auteur ; Christopher W. BARTLETT, Auteur ; Ian M. LYONS, Auteur ; Stephen A. PETRILL, Auteur Article en page(s) : p.1056-1064 Langues : Anglais (eng) Mots-clés : Mathematical anxiety  general anxiety  math cognition  quantitative genetics Index. décimale : PER Périodiques Résumé : Background Emerging work suggests that academic achievement may be influenced by the management of affect as well as through efficient information processing of task demands. In particular, mathematical anxiety has attracted recent attention because of its damaging psychological effects and potential associations with mathematical problem solving and achievement. This study investigated the genetic and environmental factors contributing to the observed differences in the anxiety people feel when confronted with mathematical tasks. In addition, the genetic and environmental mechanisms that link mathematical anxiety with math cognition and general anxiety were also explored. Methods Univariate and multivariate quantitative genetic models were conducted in a sample of 514 12-year-old twin siblings. Results Genetic factors accounted for roughly 40% of the variation in mathematical anxiety, with the remaining being accounted for by child-specific environmental factors. Multivariate genetic analyses suggested that mathematical anxiety was influenced by the genetic and nonfamilial environmental risk factors associated with general anxiety and additional independent genetic influences associated with math-based problem solving. Conclusions The development of mathematical anxiety may involve not only exposure to negative experiences with mathematics, but also likely involves genetic risks related to both anxiety and math cognition. These results suggest that integrating cognitive and affective domains may be particularly important for mathematics and may extend to other areas of academic achievement. En ligne : http://dx.doi.org/10.1111/jcpp.12224 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=238 [article] Who is afraid of math? Two sources of genetic variance for mathematical anxiety [Texte imprimé et/ou numérique] / Zhe WANG, Auteur ; Sara Ann HART, Auteur ; Yulia KOVAS, Auteur ; Sarah LUKOWSKI, Auteur ; Brooke SODEN, Auteur ; Lee A. THOMPSON, Auteur ; Robert PLOMIN, Auteur ; Gráinne MCLOUGHLIN, Auteur ; Christopher W. BARTLETT, Auteur ; Ian M. LYONS, Auteur ; Stephen A. PETRILL, Auteur . - p.1056-1064. Langues : Anglais (eng) in Journal of Child Psychology and Psychiatry > 55-9 (September 2014) . - p.1056-1064 Mots-clés : Mathematical anxiety  general anxiety  math cognition  quantitative genetics Index. décimale : PER Périodiques Résumé : Background Emerging work suggests that academic achievement may be influenced by the management of affect as well as through efficient information processing of task demands. In particular, mathematical anxiety has attracted recent attention because of its damaging psychological effects and potential associations with mathematical problem solving and achievement. This study investigated the genetic and environmental factors contributing to the observed differences in the anxiety people feel when confronted with mathematical tasks. In addition, the genetic and environmental mechanisms that link mathematical anxiety with math cognition and general anxiety were also explored. Methods Univariate and multivariate quantitative genetic models were conducted in a sample of 514 12-year-old twin siblings. Results Genetic factors accounted for roughly 40% of the variation in mathematical anxiety, with the remaining being accounted for by child-specific environmental factors. Multivariate genetic analyses suggested that mathematical anxiety was influenced by the genetic and nonfamilial environmental risk factors associated with general anxiety and additional independent genetic influences associated with math-based problem solving. Conclusions The development of mathematical anxiety may involve not only exposure to negative experiences with mathematics, but also likely involves genetic risks related to both anxiety and math cognition. These results suggest that integrating cognitive and affective domains may be particularly important for mathematics and may extend to other areas of academic achievement. En ligne : http://dx.doi.org/10.1111/jcpp.12224 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=238

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