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Auteur Margherita MALANCHINI |
Documents disponibles écrits par cet auteur (4)



Explaining the influence of non-shared environment (NSE) on symptoms of behaviour problems from preschool to adulthood: mind the missing NSE gap / Agnieszka GIDZIELA in Journal of Child Psychology and Psychiatry, 64-5 (May 2023)
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[article]
Titre : Explaining the influence of non-shared environment (NSE) on symptoms of behaviour problems from preschool to adulthood: mind the missing NSE gap Type de document : Texte imprimé et/ou numérique Auteurs : Agnieszka GIDZIELA, Auteur ; Margherita MALANCHINI, Auteur ; Kaili RIMFELD, Auteur ; Andrew MCMILLAN, Auteur ; Angelica RONALD, Auteur ; Essi VIDING, Auteur ; Alison PIKE, Auteur ; Kathryn ASBURY, Auteur ; Thalia C. ELEY, Auteur ; Sophie VON STUMM, Auteur ; Robert PLOMIN, Auteur Article en page(s) : p.747-757 Langues : Anglais (eng) Index. décimale : PER Périodiques Résumé : Background Individual differences in symptoms of behaviour problems in childhood and adolescence are not primarily due to nature or nurture - another substantial source of variance is non-shared environment (NSE). However, few specific environmental factors have been found to account for these NSE estimates. This creates a 'missing NSE' gap analogous to the 'missing heritability' gap, which refers to the shortfall in identifying DNA differences responsible for heritability. We assessed the extent to which variance in behaviour problem symptoms during the first two decades of life can be accounted for by measured NSE effects after controlling for genetics and shared environment. Methods The sample included 4,039 pairs of twins in the Twins Early Development Study whose environments and symptoms of behaviour problems were assessed in preschool, childhood, adolescence and early adulthood via parent, teacher and self-reports. Twin-specific environments were assessed via parent-reports, including early life adversity, parental feelings, parental discipline and classroom environment. Multivariate longitudinal twin model-fitting was employed to estimate the variance in behaviour problem symptoms at each age that could be predicted by environmental measures at the previous age. Results On average across childhood, adolescence and adulthood, parent-rated NSE composite measures accounted for 3.4% of the reliable NSE variance (1.0% of the total variance) in parent-rated, symptoms of behaviour problems, 0.5% (0.1%) in teacher-rated symptoms and 0.9% (0.5%) in self-rated symptoms after controlling for genetics, shared environment and error of measurement. Cumulatively across development, our parent-rated NSE measures in preschool, childhood and adolescence predicted 4.7% of the NSE variance (2.0% of the total variance) in parent-rated and 0.3% (0.2%) in self-rated behaviour problem symptoms in adulthood. Conclusions The missing NSE gap between variance explained by measured environments and total NSE variance is large. Home and classroom environments are more likely to influence behaviour problem symptoms via genetics than via NSE. En ligne : https://doi.org/10.1111/jcpp.13729 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=501
in Journal of Child Psychology and Psychiatry > 64-5 (May 2023) . - p.747-757[article] Explaining the influence of non-shared environment (NSE) on symptoms of behaviour problems from preschool to adulthood: mind the missing NSE gap [Texte imprimé et/ou numérique] / Agnieszka GIDZIELA, Auteur ; Margherita MALANCHINI, Auteur ; Kaili RIMFELD, Auteur ; Andrew MCMILLAN, Auteur ; Angelica RONALD, Auteur ; Essi VIDING, Auteur ; Alison PIKE, Auteur ; Kathryn ASBURY, Auteur ; Thalia C. ELEY, Auteur ; Sophie VON STUMM, Auteur ; Robert PLOMIN, Auteur . - p.747-757.
Langues : Anglais (eng)
in Journal of Child Psychology and Psychiatry > 64-5 (May 2023) . - p.747-757
Index. décimale : PER Périodiques Résumé : Background Individual differences in symptoms of behaviour problems in childhood and adolescence are not primarily due to nature or nurture - another substantial source of variance is non-shared environment (NSE). However, few specific environmental factors have been found to account for these NSE estimates. This creates a 'missing NSE' gap analogous to the 'missing heritability' gap, which refers to the shortfall in identifying DNA differences responsible for heritability. We assessed the extent to which variance in behaviour problem symptoms during the first two decades of life can be accounted for by measured NSE effects after controlling for genetics and shared environment. Methods The sample included 4,039 pairs of twins in the Twins Early Development Study whose environments and symptoms of behaviour problems were assessed in preschool, childhood, adolescence and early adulthood via parent, teacher and self-reports. Twin-specific environments were assessed via parent-reports, including early life adversity, parental feelings, parental discipline and classroom environment. Multivariate longitudinal twin model-fitting was employed to estimate the variance in behaviour problem symptoms at each age that could be predicted by environmental measures at the previous age. Results On average across childhood, adolescence and adulthood, parent-rated NSE composite measures accounted for 3.4% of the reliable NSE variance (1.0% of the total variance) in parent-rated, symptoms of behaviour problems, 0.5% (0.1%) in teacher-rated symptoms and 0.9% (0.5%) in self-rated symptoms after controlling for genetics, shared environment and error of measurement. Cumulatively across development, our parent-rated NSE measures in preschool, childhood and adolescence predicted 4.7% of the NSE variance (2.0% of the total variance) in parent-rated and 0.3% (0.2%) in self-rated behaviour problem symptoms in adulthood. Conclusions The missing NSE gap between variance explained by measured environments and total NSE variance is large. Home and classroom environments are more likely to influence behaviour problem symptoms via genetics than via NSE. En ligne : https://doi.org/10.1111/jcpp.13729 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=501 Gene–environment interaction using polygenic scores: Do polygenic scores for psychopathology moderate predictions from environmental risk to behavior problems? / Robert PLOMIN in Development and Psychopathology, 34-5 (December 2022)
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Titre : Gene–environment interaction using polygenic scores: Do polygenic scores for psychopathology moderate predictions from environmental risk to behavior problems? Type de document : Texte imprimé et/ou numérique Auteurs : Robert PLOMIN, Auteur ; Agnieszka GIDZIELA, Auteur ; Margherita MALANCHINI, Auteur ; Sophie VON STUMM, Auteur Article en page(s) : p.1816-1826 Langues : Anglais (eng) Mots-clés : behavior problems genotype–environment interaction polygenic scores twins Index. décimale : PER Périodiques Résumé : The DNA revolution has energized research on interactions between genes and environments (GxE) by creating indices of G (polygenic scores) that are powerful predictors of behavioral traits. Here, we test the extent to which polygenic scores for attention-deficit/hyperactivity disorder and neuroticism moderate associations between parent reports of their children’s environmental risk (E) at ages 3 and 4 and teacher ratings of behavior problems (hyperactivity/inattention, conduct problems, emotional symptoms, and peer relationship problems) at ages 7, 9 and 12. The sampling frame included up to 6687 twins from the Twins Early Development Study. Our analyses focused on relative effect sizes of G, E and GxE in predicting behavior problems. G, E and GxE predicted up to 2%, 2% and 0.4%, respectively, of the variance in externalizing behavior problems (hyperactivity/inattention and conduct problems) across ages 7, 9 and 12, with no clear developmental trends. G and E predictions of emotional symptoms and peer relationship problems were weaker. A quarter (12 of 48) of our tests of GxE were nominally significant (p = .05). Increasing the predictive power of G and E would enhance the search for GxE. En ligne : http://dx.doi.org/10.1017/S0954579422000931 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=492
in Development and Psychopathology > 34-5 (December 2022) . - p.1816-1826[article] Gene–environment interaction using polygenic scores: Do polygenic scores for psychopathology moderate predictions from environmental risk to behavior problems? [Texte imprimé et/ou numérique] / Robert PLOMIN, Auteur ; Agnieszka GIDZIELA, Auteur ; Margherita MALANCHINI, Auteur ; Sophie VON STUMM, Auteur . - p.1816-1826.
Langues : Anglais (eng)
in Development and Psychopathology > 34-5 (December 2022) . - p.1816-1826
Mots-clés : behavior problems genotype–environment interaction polygenic scores twins Index. décimale : PER Périodiques Résumé : The DNA revolution has energized research on interactions between genes and environments (GxE) by creating indices of G (polygenic scores) that are powerful predictors of behavioral traits. Here, we test the extent to which polygenic scores for attention-deficit/hyperactivity disorder and neuroticism moderate associations between parent reports of their children’s environmental risk (E) at ages 3 and 4 and teacher ratings of behavior problems (hyperactivity/inattention, conduct problems, emotional symptoms, and peer relationship problems) at ages 7, 9 and 12. The sampling frame included up to 6687 twins from the Twins Early Development Study. Our analyses focused on relative effect sizes of G, E and GxE in predicting behavior problems. G, E and GxE predicted up to 2%, 2% and 0.4%, respectively, of the variance in externalizing behavior problems (hyperactivity/inattention and conduct problems) across ages 7, 9 and 12, with no clear developmental trends. G and E predictions of emotional symptoms and peer relationship problems were weaker. A quarter (12 of 48) of our tests of GxE were nominally significant (p = .05). Increasing the predictive power of G and E would enhance the search for GxE. En ligne : http://dx.doi.org/10.1017/S0954579422000931 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=492 The developmental interplay between the p-factor of psychopathology and the g-factor of intelligence from age 7 through 16 years / Sophie VON STUMM in Development and Psychopathology, 36-3 (August 2024)
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Titre : The developmental interplay between the p-factor of psychopathology and the g-factor of intelligence from age 7 through 16 years Type de document : Texte imprimé et/ou numérique Auteurs : Sophie VON STUMM, Auteur ; Margherita MALANCHINI, Auteur ; Helen L. FISHER, Auteur Article en page(s) : p.1479-1488 Langues : Anglais (eng) Mots-clés : adolescence childhood cross-lagged twin model intelligence p-factor Index. décimale : PER Périodiques Résumé : Intelligence and mental health are the core pillars of individual adaptation, growth, and opportunity. Here, we charted across childhood and adolescence the developmental interplay between the p-factor of psychopathology, which captures the experience of symptoms across the spectrum of psychiatric disorders, and the g-factor of general intelligence that describes the ability to think, reason, and learn.Our preregistered analyses included 7,433 twin pairs from the Twins Early Development Study (TEDS), who were born 1994 to 1996 in England and Wales. At the ages 7, 9, 12, and 16 years, the twins completed two to four intelligence tests, and multi-informant measures (i.e., self-, parent- and teacher-rated) of psychopathology were collected.Independent of their cross-sectional correlations, p- and g-factors were linked by consistent, bidirectional, and negative cross-lagged paths across childhood and adolescence (from ?.07 to ?.13 with 95% CIs from ?.03 to ?.15). The cross-lagged paths from intelligence to psychopathology were largely due to genetic influences, but the paths from psychopathology to intelligence were driven by environmental factors, and increasingly so with age.Our findings suggest that intelligence and psychopathology are developmentally intertwined due to fluctuating etiological processes. Understanding the interplay of g- and p-factors is key for improving children?s developmental outcomes. En ligne : https://dx.doi.org/10.1017/S095457942300069X Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=539
in Development and Psychopathology > 36-3 (August 2024) . - p.1479-1488[article] The developmental interplay between the p-factor of psychopathology and the g-factor of intelligence from age 7 through 16 years [Texte imprimé et/ou numérique] / Sophie VON STUMM, Auteur ; Margherita MALANCHINI, Auteur ; Helen L. FISHER, Auteur . - p.1479-1488.
Langues : Anglais (eng)
in Development and Psychopathology > 36-3 (August 2024) . - p.1479-1488
Mots-clés : adolescence childhood cross-lagged twin model intelligence p-factor Index. décimale : PER Périodiques Résumé : Intelligence and mental health are the core pillars of individual adaptation, growth, and opportunity. Here, we charted across childhood and adolescence the developmental interplay between the p-factor of psychopathology, which captures the experience of symptoms across the spectrum of psychiatric disorders, and the g-factor of general intelligence that describes the ability to think, reason, and learn.Our preregistered analyses included 7,433 twin pairs from the Twins Early Development Study (TEDS), who were born 1994 to 1996 in England and Wales. At the ages 7, 9, 12, and 16 years, the twins completed two to four intelligence tests, and multi-informant measures (i.e., self-, parent- and teacher-rated) of psychopathology were collected.Independent of their cross-sectional correlations, p- and g-factors were linked by consistent, bidirectional, and negative cross-lagged paths across childhood and adolescence (from ?.07 to ?.13 with 95% CIs from ?.03 to ?.15). The cross-lagged paths from intelligence to psychopathology were largely due to genetic influences, but the paths from psychopathology to intelligence were driven by environmental factors, and increasingly so with age.Our findings suggest that intelligence and psychopathology are developmentally intertwined due to fluctuating etiological processes. Understanding the interplay of g- and p-factors is key for improving children?s developmental outcomes. En ligne : https://dx.doi.org/10.1017/S095457942300069X Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=539 Using DNA to predict behaviour problems from preschool to adulthood / Agnieszka GIDZIELA in Journal of Child Psychology and Psychiatry, 63-7 (July 2022)
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Titre : Using DNA to predict behaviour problems from preschool to adulthood Type de document : Texte imprimé et/ou numérique Auteurs : Agnieszka GIDZIELA, Auteur ; Kaili RIMFELD, Auteur ; Margherita MALANCHINI, Auteur ; Andrea G. ALLEGRINI, Auteur ; Andrew MCMILLAN, Auteur ; Saskia SELZAM, Auteur ; Angelica RONALD, Auteur ; Essi VIDING, Auteur ; Sophie VON STUMM, Auteur ; Thalia C. ELEY, Auteur ; Robert PLOMIN, Auteur Article en page(s) : p.781-792 Langues : Anglais (eng) Mots-clés : Adolescent Adult Child Child, Preschool Dna Educational Status Genome-Wide Association Study Humans Multifactorial Inheritance Problem Behavior Young Adult Behaviour problems composites externalising internalising polygenic scores twin study Index. décimale : PER Périodiques Résumé : BACKGROUND: One goal of the DNA revolution is to predict problems in order to prevent them. We tested here if the prediction of behaviour problems from genome-wide polygenic scores (GPS) can be improved by creating composites across ages and across raters and by using a multi-GPS approach that includes GPS for adult psychiatric disorders as well as for childhood behaviour problems. METHOD: Our sample included 3,065 genotyped unrelated individuals from the Twins Early Development Study who were assessed longitudinally for hyperactivity, conduct, emotional problems, and peer problems as rated by parents, teachers, and children themselves. GPS created from 15 genome-wide association studies were used separately and jointly to test the prediction of behaviour problems composites (general behaviour problems, externalising, and internalising) across ages (from age 2 to 21) and across raters in penalised regression models. Based on the regression weights, we created multi-trait GPS reflecting the best prediction of behaviour problems. We compared GPS prediction to twin heritability using the same sample and measures. RESULTS: Multi-GPS prediction of behaviour problems increased from <2% of the variance for observed traits to up to 6% for cross-age and cross-rater composites. Twin study estimates of heritability, although to a lesser extent, mirrored patterns of multi-GPS prediction as they increased from <40% to 83%. CONCLUSIONS: The ability of GPS to predict behaviour problems can be improved by using multiple GPS, cross-age composites and cross-rater composites, although the effect sizes remain modest, up to 6%. Our approach can be used in any genotyped sample to create multi-trait GPS predictors of behaviour problems that will be more predictive than polygenic scores based on a single age, rater, or GPS. En ligne : http://dx.doi.org/10.1111/jcpp.13519 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=477
in Journal of Child Psychology and Psychiatry > 63-7 (July 2022) . - p.781-792[article] Using DNA to predict behaviour problems from preschool to adulthood [Texte imprimé et/ou numérique] / Agnieszka GIDZIELA, Auteur ; Kaili RIMFELD, Auteur ; Margherita MALANCHINI, Auteur ; Andrea G. ALLEGRINI, Auteur ; Andrew MCMILLAN, Auteur ; Saskia SELZAM, Auteur ; Angelica RONALD, Auteur ; Essi VIDING, Auteur ; Sophie VON STUMM, Auteur ; Thalia C. ELEY, Auteur ; Robert PLOMIN, Auteur . - p.781-792.
Langues : Anglais (eng)
in Journal of Child Psychology and Psychiatry > 63-7 (July 2022) . - p.781-792
Mots-clés : Adolescent Adult Child Child, Preschool Dna Educational Status Genome-Wide Association Study Humans Multifactorial Inheritance Problem Behavior Young Adult Behaviour problems composites externalising internalising polygenic scores twin study Index. décimale : PER Périodiques Résumé : BACKGROUND: One goal of the DNA revolution is to predict problems in order to prevent them. We tested here if the prediction of behaviour problems from genome-wide polygenic scores (GPS) can be improved by creating composites across ages and across raters and by using a multi-GPS approach that includes GPS for adult psychiatric disorders as well as for childhood behaviour problems. METHOD: Our sample included 3,065 genotyped unrelated individuals from the Twins Early Development Study who were assessed longitudinally for hyperactivity, conduct, emotional problems, and peer problems as rated by parents, teachers, and children themselves. GPS created from 15 genome-wide association studies were used separately and jointly to test the prediction of behaviour problems composites (general behaviour problems, externalising, and internalising) across ages (from age 2 to 21) and across raters in penalised regression models. Based on the regression weights, we created multi-trait GPS reflecting the best prediction of behaviour problems. We compared GPS prediction to twin heritability using the same sample and measures. RESULTS: Multi-GPS prediction of behaviour problems increased from <2% of the variance for observed traits to up to 6% for cross-age and cross-rater composites. Twin study estimates of heritability, although to a lesser extent, mirrored patterns of multi-GPS prediction as they increased from <40% to 83%. CONCLUSIONS: The ability of GPS to predict behaviour problems can be improved by using multiple GPS, cross-age composites and cross-rater composites, although the effect sizes remain modest, up to 6%. Our approach can be used in any genotyped sample to create multi-trait GPS predictors of behaviour problems that will be more predictive than polygenic scores based on a single age, rater, or GPS. En ligne : http://dx.doi.org/10.1111/jcpp.13519 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=477