Annual Research Review: Towards a deeper understanding of nature and nurture: combining family-based quasi-experimental methods with genomic data / Tom A. MCADAMS in Journal of Child Psychology and Psychiatry, 64-4 (April 2023)  

Public ISBD [article]  inJournal of Child Psychology and Psychiatry > 64-4 (April 2023) . - p.693-707 Titre : Annual Research Review: Towards a deeper understanding of nature and nurture: combining family-based quasi-experimental methods with genomic data Type de document : texte imprimé Auteurs : Tom A. MCADAMS, Auteur ; Rosa CHEESMAN, Auteur ; Yasmin I. AHMADZADEH, Auteur Article en page(s) : p.693-707 Langues : Anglais (eng) Index. décimale : PER Périodiques Résumé : Distinguishing between the effects of nature and nurture constitutes a major research goal for those interested in understanding human development. It is known, for example, that many parent traits predict mental health outcomes in children, but the causal processes underlying such associations are often unclear. Family-based quasi-experimental designs such as sibling comparison, adoption and extended family studies have been used for decades to distinguish the genetic transmission of risk from the environmental effects family members potentially have on one another. Recently, these designs have been combined with genomic data, and this combination is fuelling a range of exciting methodological advances. In this review we explore these advances - highlighting the ways in which they have been applied to date and considering what they are likely to teach us in the coming years about the aetiology and intergenerational transmission of psychopathology. En ligne : https://doi.org/10.1111/jcpp.13720 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=501 [article] Annual Research Review: Towards a deeper understanding of nature and nurture: combining family-based quasi-experimental methods with genomic data [texte imprimé] / Tom A. MCADAMS, Auteur ; Rosa CHEESMAN, Auteur ; Yasmin I. AHMADZADEH, Auteur . - p.693-707. Langues : Anglais (eng) in Journal of Child Psychology and Psychiatry > 64-4 (April 2023) . - p.693-707 Index. décimale : PER Périodiques Résumé : Distinguishing between the effects of nature and nurture constitutes a major research goal for those interested in understanding human development. It is known, for example, that many parent traits predict mental health outcomes in children, but the causal processes underlying such associations are often unclear. Family-based quasi-experimental designs such as sibling comparison, adoption and extended family studies have been used for decades to distinguish the genetic transmission of risk from the environmental effects family members potentially have on one another. Recently, these designs have been combined with genomic data, and this combination is fuelling a range of exciting methodological advances. In this review we explore these advances - highlighting the ways in which they have been applied to date and considering what they are likely to teach us in the coming years about the aetiology and intergenerational transmission of psychopathology. En ligne : https://doi.org/10.1111/jcpp.13720 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=501

Direct and indirect genetic effects on early neurodevelopmental traits / Laura HEGEMANN in Journal of Child Psychology and Psychiatry, 66-7 (July 2025)  

Public ISBD [article]  inJournal of Child Psychology and Psychiatry > 66-7 (July 2025) . - p.1053-1064 Titre : Direct and indirect genetic effects on early neurodevelopmental traits Type de document : texte imprimé Auteurs : Laura HEGEMANN, Auteur ; Espen M. EILERTSEN, Auteur ; Johanne HAGEN PETTERSEN, Auteur ; Elizabeth C. CORFIELD, Auteur ; Rosa CHEESMAN, Auteur ; Leonard FRACH, Auteur ; Ludvig DAAE BJØRNDAL, Auteur ; Helga ASK, Auteur ; Beate ST POURCAIN, Auteur ; Alexandra HAVDAHL, Auteur ; Laurie J. HANNIGAN, Auteur Article en page(s) : p.1053-1064 Langues : Anglais (eng) Mots-clés : Autism  ADHD  MoBa  indirect genetic effects  genetic nurture  neurodevelopmental traits Index. décimale : PER Périodiques Résumé : Background Neurodevelopmental conditions are highly heritable. Recent studies have shown that genomic heritability estimates can be confounded by genetic effects mediated via the environment (indirect genetic effects). However, the relative importance of direct versus indirect genetic effects on early variability in traits related to neurodevelopmental conditions is unknown. Methods The sample included up to 24,692 parent-offspring trios from the Norwegian MoBa cohort. We use Trio-GCTA to estimate latent direct and indirect genetic effects on mother-reported neurodevelopmental traits at age of 3 years (restricted and repetitive behaviors and interests, inattention, hyperactivity, language, social, and motor development). Further, we investigate to what extent direct and indirect effects are attributable to common genetic variants associated with autism, ADHD, developmental dyslexia, educational attainment, and cognitive ability using polygenic scores (PGS) in regression modeling. Results We find evidence for contributions of direct and indirect latent common genetic effects to inattention (direct: explaining 4.8% of variance, indirect: 6.7%) hyperactivity (direct: 1.3%, indirect: 9.6%), and restricted and repetitive behaviors (direct: 0.8%, indirect: 7.3%). Direct effects best explained variation in social and communication, language, and motor development (5.1% 5.7%). Direct genetic effects on inattention were captured by PGS for ADHD, educational attainment, and cognitive ability, whereas direct genetic effects on language development were captured by cognitive ability, educational attainment, and autism PGS. Indirect genetic effects on neurodevelopmental traits were primarily captured by educational attainment and/or cognitive ability PGS. Conclusions Results were consistent with differential contributions to neurodevelopmental traits in early childhood from direct and indirect genetic effects. Indirect effects were particularly important for hyperactivity and restricted and repetitive behaviors and interests and may be linked to genetic variation associated with cognition and educational attainment. Our findings illustrate the importance of within-family methods for disentangling genetic processes that influence early neurodevelopmental traits, even when identifiable associations are small. En ligne : https://doi.org/10.1111/jcpp.14122 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=562 [article] Direct and indirect genetic effects on early neurodevelopmental traits [texte imprimé] / Laura HEGEMANN, Auteur ; Espen M. EILERTSEN, Auteur ; Johanne HAGEN PETTERSEN, Auteur ; Elizabeth C. CORFIELD, Auteur ; Rosa CHEESMAN, Auteur ; Leonard FRACH, Auteur ; Ludvig DAAE BJØRNDAL, Auteur ; Helga ASK, Auteur ; Beate ST POURCAIN, Auteur ; Alexandra HAVDAHL, Auteur ; Laurie J. HANNIGAN, Auteur . - p.1053-1064. Langues : Anglais (eng) in Journal of Child Psychology and Psychiatry > 66-7 (July 2025) . - p.1053-1064 Mots-clés : Autism  ADHD  MoBa  indirect genetic effects  genetic nurture  neurodevelopmental traits Index. décimale : PER Périodiques Résumé : Background Neurodevelopmental conditions are highly heritable. Recent studies have shown that genomic heritability estimates can be confounded by genetic effects mediated via the environment (indirect genetic effects). However, the relative importance of direct versus indirect genetic effects on early variability in traits related to neurodevelopmental conditions is unknown. Methods The sample included up to 24,692 parent-offspring trios from the Norwegian MoBa cohort. We use Trio-GCTA to estimate latent direct and indirect genetic effects on mother-reported neurodevelopmental traits at age of 3 years (restricted and repetitive behaviors and interests, inattention, hyperactivity, language, social, and motor development). Further, we investigate to what extent direct and indirect effects are attributable to common genetic variants associated with autism, ADHD, developmental dyslexia, educational attainment, and cognitive ability using polygenic scores (PGS) in regression modeling. Results We find evidence for contributions of direct and indirect latent common genetic effects to inattention (direct: explaining 4.8% of variance, indirect: 6.7%) hyperactivity (direct: 1.3%, indirect: 9.6%), and restricted and repetitive behaviors (direct: 0.8%, indirect: 7.3%). Direct effects best explained variation in social and communication, language, and motor development (5.1% 5.7%). Direct genetic effects on inattention were captured by PGS for ADHD, educational attainment, and cognitive ability, whereas direct genetic effects on language development were captured by cognitive ability, educational attainment, and autism PGS. Indirect genetic effects on neurodevelopmental traits were primarily captured by educational attainment and/or cognitive ability PGS. Conclusions Results were consistent with differential contributions to neurodevelopmental traits in early childhood from direct and indirect genetic effects. Indirect effects were particularly important for hyperactivity and restricted and repetitive behaviors and interests and may be linked to genetic variation associated with cognition and educational attainment. Our findings illustrate the importance of within-family methods for disentangling genetic processes that influence early neurodevelopmental traits, even when identifiable associations are small. En ligne : https://doi.org/10.1111/jcpp.14122 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=562

How interactions between ADHD and schools affect educational achievement: a family-based genetically sensitive study / Rosa CHEESMAN in Journal of Child Psychology and Psychiatry, 63-10 (October 2022)  

Public ISBD [article]  inJournal of Child Psychology and Psychiatry > 63-10 (October 2022) . - p.1174-1185 Titre : How interactions between ADHD and schools affect educational achievement: a family-based genetically sensitive study Type de document : texte imprimé Auteurs : Rosa CHEESMAN, Auteur ; Espen M. EILERTSEN, Auteur ; Ziada AYORECH, Auteur ; Nicolai T. BORGEN, Auteur ; Ole A. ANDREASSEN, Auteur ; Henrik LARSSON, Auteur ; Henrik ZACHRISSON, Auteur ; Fartein A. TORVIK, Auteur ; Eivind YSTRØM, Auteur Année de publication : 2022 Article en page(s) : p.1174-1185 Langues : Anglais (eng) Mots-clés : Academic Success  Attention Deficit Disorder with Hyperactivity/diagnosis/epidemiology/genetics  Cohort Studies  Educational Status  Humans  Schools  Adhd  gene-environment interaction  genetics  school  school performance Index. décimale : PER Périodiques Résumé : BACKGROUND: Children with ADHD tend to achieve less than their peers in school. It is unknown whether schools moderate this association. Nonrandom selection of children into schools related to variations in their ADHD risk poses a methodological problem. METHODS: We linked data on ADHD symptoms of inattention and hyperactivity and parent-child ADHD polygenic scores (PGS) from the Norwegian Mother, Father, and Child Cohort Study (MoBa) to achievement in standardised tests and school identifiers. We estimated interactions of schools with individual differences between students in inattention, hyperactivity, and ADHD-PGS using multilevel models with random slopes for ADHD effects on achievement over schools. In our PGS analyses, we adjust for parental selection of schools by adjusting for parental ADHD-PGS (a within-family PGS design). We then tested whether five school sociodemographic measures explained any interactions. RESULTS: Analysis of up to 23,598 students attending 2,579 schools revealed interactions between school and ADHD effects on achievement. The variability between schools in the effects of inattention, hyperactivity and within-family ADHD-PGS on achievement was 0.08, 0.07 and 0.05 SDs, respectively. For example, the average effect of inattention on achievement wasÃŽ2=-0.23 (SE=0.009), but in 2.5% of schools with the weakest effects, the value was -0.07 or less. ADHD has a weaker effect on achievement in higher-performing schools. Schools make more of a difference to the achievements of students with higher levels of ADHD, explaining over four times as much variance in achievement for those with high versus average inattention symptoms. School sociodemographic measures could not explain the ADHD-by-school interactions. CONCLUSIONS: Although ADHD symptoms and genetic risk tend to hinder achievement, schools where their effects are weaker do exist. Differences between schools in support for children with ADHD should be evened out. En ligne : http://dx.doi.org/10.1111/jcpp.13656 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=486 [article] How interactions between ADHD and schools affect educational achievement: a family-based genetically sensitive study [texte imprimé] / Rosa CHEESMAN, Auteur ; Espen M. EILERTSEN, Auteur ; Ziada AYORECH, Auteur ; Nicolai T. BORGEN, Auteur ; Ole A. ANDREASSEN, Auteur ; Henrik LARSSON, Auteur ; Henrik ZACHRISSON, Auteur ; Fartein A. TORVIK, Auteur ; Eivind YSTRØM, Auteur . - 2022 . - p.1174-1185. Langues : Anglais (eng) in Journal of Child Psychology and Psychiatry > 63-10 (October 2022) . - p.1174-1185 Mots-clés : Academic Success  Attention Deficit Disorder with Hyperactivity/diagnosis/epidemiology/genetics  Cohort Studies  Educational Status  Humans  Schools  Adhd  gene-environment interaction  genetics  school  school performance Index. décimale : PER Périodiques Résumé : BACKGROUND: Children with ADHD tend to achieve less than their peers in school. It is unknown whether schools moderate this association. Nonrandom selection of children into schools related to variations in their ADHD risk poses a methodological problem. METHODS: We linked data on ADHD symptoms of inattention and hyperactivity and parent-child ADHD polygenic scores (PGS) from the Norwegian Mother, Father, and Child Cohort Study (MoBa) to achievement in standardised tests and school identifiers. We estimated interactions of schools with individual differences between students in inattention, hyperactivity, and ADHD-PGS using multilevel models with random slopes for ADHD effects on achievement over schools. In our PGS analyses, we adjust for parental selection of schools by adjusting for parental ADHD-PGS (a within-family PGS design). We then tested whether five school sociodemographic measures explained any interactions. RESULTS: Analysis of up to 23,598 students attending 2,579 schools revealed interactions between school and ADHD effects on achievement. The variability between schools in the effects of inattention, hyperactivity and within-family ADHD-PGS on achievement was 0.08, 0.07 and 0.05 SDs, respectively. For example, the average effect of inattention on achievement wasÃŽ2=-0.23 (SE=0.009), but in 2.5% of schools with the weakest effects, the value was -0.07 or less. ADHD has a weaker effect on achievement in higher-performing schools. Schools make more of a difference to the achievements of students with higher levels of ADHD, explaining over four times as much variance in achievement for those with high versus average inattention symptoms. School sociodemographic measures could not explain the ADHD-by-school interactions. CONCLUSIONS: Although ADHD symptoms and genetic risk tend to hinder achievement, schools where their effects are weaker do exist. Differences between schools in support for children with ADHD should be evened out. En ligne : http://dx.doi.org/10.1111/jcpp.13656 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=486

Multivariate maternal effects across the internalizing–externalizing spectrum in childhood: results from the Norwegian mother, father, and child cohort study / Espen Moen EILERTSEN in Journal of Child Psychology and Psychiatry, 67-7 (July 2026)  

Public ISBD [article]  inJournal of Child Psychology and Psychiatry > 67-7 (July 2026) . - p.1040-1052 Titre : Multivariate maternal effects across the internalizing–externalizing spectrum in childhood: results from the Norwegian mother, father, and child cohort study Type de document : texte imprimé Auteurs : Espen Moen EILERTSEN, Auteur ; Nikolai HAAHJEM EFTEDAL, Auteur ; Rosa CHEESMAN, Auteur ; Ziada AYORECH, Auteur ; Joakim Coleman EBELTOFT, Auteur ; Hans Fredrik SUNDE, Auteur ; Anneli Desiré TANDBERG, Auteur ; Fartein Ask TORVIK, Auteur ; Eivind YSTROM, Auteur Article en page(s) : p.1040-1052 Langues : Anglais (eng) Mots-clés : Internalizing disorder  externalizing disorder  parenting  behavioral genetics Index. décimale : PER Périodiques Résumé : Background From a functionalist perspective, parenting behaviors have adaptive functions and are partly expressions of genetic variation. Maternal genes that have effects on children are often referred to as indirect maternal genetic effects. Indirect genetic effects provide a means for measuring the role of parenting without the need for specifying the relevant parental behaviors. We studied indirect maternal genetic effects to address both the importance and commonality of parenting across the internalizing?externalizing spectrum of behavior problems in childhood. We further addressed how indirect genetic effects impact our understanding of direct genetic effects if not accounted for. Methods Utilizing data from the Norwegian Mother, Father, and Child Cohort Study (MoBa), our analyses involved 42,423 children and their mothers. Both pedigree and genotype data were used to infer genetic relationships. We applied multivariate latent variable models to distinguish indirect maternal genetic effects and direct offspring genetic effects on seven measures of internalizing?externalizing behaviors. Results Our findings indicate significant maternal genetic influences, explaining 7%?18% of the variance across internalizing?externalizing behaviors. A general maternal effect common across behaviors could adequately account for most of the variability. The analyses further indicate that direct child genetic effects appear smaller and more complex when indirect maternal genetic effects are modeled simultaneously. Conclusions By summarizing the effects of parenting with indirect maternal genetic effects, we show a substantial contribution of parents with respect to internalizing?externalizing behaviors in childhood. Although parenting is multifaceted, the effects of parenting are general and can succinctly be described as a single common dimension. Further, our study demonstrates that direct genetic effects appear smaller and more complex when maternal genetic effects are accounted for, highlighting the confounding potential of parental effects in understanding the role of genetic differences in child psychopathology. En ligne : https://doi.org/10.1111/jcpp.70111 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=588 [article] Multivariate maternal effects across the internalizing–externalizing spectrum in childhood: results from the Norwegian mother, father, and child cohort study [texte imprimé] / Espen Moen EILERTSEN, Auteur ; Nikolai HAAHJEM EFTEDAL, Auteur ; Rosa CHEESMAN, Auteur ; Ziada AYORECH, Auteur ; Joakim Coleman EBELTOFT, Auteur ; Hans Fredrik SUNDE, Auteur ; Anneli Desiré TANDBERG, Auteur ; Fartein Ask TORVIK, Auteur ; Eivind YSTROM, Auteur . - p.1040-1052. Langues : Anglais (eng) in Journal of Child Psychology and Psychiatry > 67-7 (July 2026) . - p.1040-1052 Mots-clés : Internalizing disorder  externalizing disorder  parenting  behavioral genetics Index. décimale : PER Périodiques Résumé : Background From a functionalist perspective, parenting behaviors have adaptive functions and are partly expressions of genetic variation. Maternal genes that have effects on children are often referred to as indirect maternal genetic effects. Indirect genetic effects provide a means for measuring the role of parenting without the need for specifying the relevant parental behaviors. We studied indirect maternal genetic effects to address both the importance and commonality of parenting across the internalizing?externalizing spectrum of behavior problems in childhood. We further addressed how indirect genetic effects impact our understanding of direct genetic effects if not accounted for. Methods Utilizing data from the Norwegian Mother, Father, and Child Cohort Study (MoBa), our analyses involved 42,423 children and their mothers. Both pedigree and genotype data were used to infer genetic relationships. We applied multivariate latent variable models to distinguish indirect maternal genetic effects and direct offspring genetic effects on seven measures of internalizing?externalizing behaviors. Results Our findings indicate significant maternal genetic influences, explaining 7%?18% of the variance across internalizing?externalizing behaviors. A general maternal effect common across behaviors could adequately account for most of the variability. The analyses further indicate that direct child genetic effects appear smaller and more complex when indirect maternal genetic effects are modeled simultaneously. Conclusions By summarizing the effects of parenting with indirect maternal genetic effects, we show a substantial contribution of parents with respect to internalizing?externalizing behaviors in childhood. Although parenting is multifaceted, the effects of parenting are general and can succinctly be described as a single common dimension. Further, our study demonstrates that direct genetic effects appear smaller and more complex when maternal genetic effects are accounted for, highlighting the confounding potential of parental effects in understanding the role of genetic differences in child psychopathology. En ligne : https://doi.org/10.1111/jcpp.70111 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=588

On the importance of parenting in externalizing disorders: an evaluation of indirect genetic effects in families / Espen M. EILERTSEN in Journal of Child Psychology and Psychiatry, 63-10 (October 2022)  

Public ISBD [article]  inJournal of Child Psychology and Psychiatry > 63-10 (October 2022) . - p.1186-1195 Titre : On the importance of parenting in externalizing disorders: an evaluation of indirect genetic effects in families Type de document : texte imprimé Auteurs : Espen M. EILERTSEN, Auteur ; Rosa CHEESMAN, Auteur ; Ziada AYORECH, Auteur ; Espen RØYSAMB, Auteur ; Jean-Baptiste PINGAULT, Auteur ; PÃ¥l R. NJØLSTAD, Auteur ; Ole A. ANDREASSEN, Auteur ; Alexandra HAVDAHL, Auteur ; Tom A. MCADAMS, Auteur ; Fartein A. TORVIK, Auteur ; Eivind YSTRØM, Auteur Année de publication : 2022 Article en page(s) : p.1186-1195 Langues : Anglais (eng) Mots-clés : Child  Cohort Studies  Humans  Parenting  Parents  Problem Behavior  Externalizing disorders  MoBa  gene-environment correlation  indirect genetic effects  parenting Index. décimale : PER Périodiques Résumé : BACKGROUND: Theoretical models of the development of childhood externalizing disorders emphasize the role of parents. Empirical studies have not been able to identify specific aspects of parental behaviors explaining a considerable proportion of the observed individual differences in externalizing problems. The problem is complicated by the contribution of genetic factors to externalizing problems, as parents provide both genes and environments to their children. We studied the joint contributions of direct genetic effects of children and the indirect genetic effects of parents through the environment on externalizing problems. METHODS: The study used genome-wide single nucleotide polymorphism data from 9,675 parent-offspring trios participating in the Norwegian Mother Father and child cohort study. Based on genomic relatedness matrices, we estimated the contribution of direct genetic effects and indirect maternal and paternal genetic effects on ADHD, conduct and disruptive behaviors at 8years of age. RESULTS: Models including indirect parental genetic effects were preferred for the ADHD symptoms of inattention and hyperactivity, and conduct problems, but not oppositional defiant behaviors. Direct genetic effects accounted for 11% to 24% of the variance, whereas indirect parental genetic effects accounted for 0% to 16% in ADHD symptoms and conduct problems. The correlation between direct and indirect genetic effects, or gene-environment correlations, decreased the variance with 16% and 13% for conduct and inattention problems, and increased the variance with 6% for hyperactivity problems. CONCLUSIONS: This study provides empirical support to the notion that parents have a significant role in the development of childhood externalizing behaviors. The parental contribution to decrease in variation of inattention and conduct problems by gene-environment correlations would limit the number of children reaching clinical ranges in symptoms. Not accounting for indirect parental genetic effects can lead to both positive and negative bias when identifying genetic variants for childhood externalizing behaviors. En ligne : http://dx.doi.org/10.1111/jcpp.13654 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=486 [article] On the importance of parenting in externalizing disorders: an evaluation of indirect genetic effects in families [texte imprimé] / Espen M. EILERTSEN, Auteur ; Rosa CHEESMAN, Auteur ; Ziada AYORECH, Auteur ; Espen RØYSAMB, Auteur ; Jean-Baptiste PINGAULT, Auteur ; PÃ¥l R. NJØLSTAD, Auteur ; Ole A. ANDREASSEN, Auteur ; Alexandra HAVDAHL, Auteur ; Tom A. MCADAMS, Auteur ; Fartein A. TORVIK, Auteur ; Eivind YSTRØM, Auteur . - 2022 . - p.1186-1195. Langues : Anglais (eng) in Journal of Child Psychology and Psychiatry > 63-10 (October 2022) . - p.1186-1195 Mots-clés : Child  Cohort Studies  Humans  Parenting  Parents  Problem Behavior  Externalizing disorders  MoBa  gene-environment correlation  indirect genetic effects  parenting Index. décimale : PER Périodiques Résumé : BACKGROUND: Theoretical models of the development of childhood externalizing disorders emphasize the role of parents. Empirical studies have not been able to identify specific aspects of parental behaviors explaining a considerable proportion of the observed individual differences in externalizing problems. The problem is complicated by the contribution of genetic factors to externalizing problems, as parents provide both genes and environments to their children. We studied the joint contributions of direct genetic effects of children and the indirect genetic effects of parents through the environment on externalizing problems. METHODS: The study used genome-wide single nucleotide polymorphism data from 9,675 parent-offspring trios participating in the Norwegian Mother Father and child cohort study. Based on genomic relatedness matrices, we estimated the contribution of direct genetic effects and indirect maternal and paternal genetic effects on ADHD, conduct and disruptive behaviors at 8years of age. RESULTS: Models including indirect parental genetic effects were preferred for the ADHD symptoms of inattention and hyperactivity, and conduct problems, but not oppositional defiant behaviors. Direct genetic effects accounted for 11% to 24% of the variance, whereas indirect parental genetic effects accounted for 0% to 16% in ADHD symptoms and conduct problems. The correlation between direct and indirect genetic effects, or gene-environment correlations, decreased the variance with 16% and 13% for conduct and inattention problems, and increased the variance with 6% for hyperactivity problems. CONCLUSIONS: This study provides empirical support to the notion that parents have a significant role in the development of childhood externalizing behaviors. The parental contribution to decrease in variation of inattention and conduct problems by gene-environment correlations would limit the number of children reaching clinical ranges in symptoms. Not accounting for indirect parental genetic effects can lead to both positive and negative bias when identifying genetic variants for childhood externalizing behaviors. En ligne : http://dx.doi.org/10.1111/jcpp.13654 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=486

Polygenic scores differentially predict developmental trajectories of subtypes of social withdrawal in childhood / Geneviève MORNEAU-VAILLANCOURT in Journal of Child Psychology and Psychiatry, 62-11 (November 2021)  

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School quality ratings are weak predictors of students' achievement and well-being / Sophie VON STUMM in Journal of Child Psychology and Psychiatry, 62-3 (March 2021)  

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The p factor: genetic analyses support a general dimension of psychopathology in childhood and adolescence / Andrea G. ALLEGRINI in Journal of Child Psychology and Psychiatry, 61-1 (January 2020)  

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