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Auteur Liam MAHEDY |
Documents disponibles écrits par cet auteur (3)



Externalising pathways to alcohol-related problems in emerging adulthood / Gemma HAMMERTON in Journal of Child Psychology and Psychiatry, 61-6 (June 2020)
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[article]
Titre : Externalising pathways to alcohol-related problems in emerging adulthood Type de document : Texte imprimé et/ou numérique Auteurs : Gemma HAMMERTON, Auteur ; Alexis C. EDWARDS, Auteur ; Liam MAHEDY, Auteur ; Joseph MURRAY, Auteur ; Barbara MAUGHAN, Auteur ; Kenneth S. KENDLER, Auteur ; Matthew HICKMAN, Auteur ; Jon HERON, Auteur Article en page(s) : p.721-731 Langues : Anglais (eng) Mots-clés : Avon Longitudinal Study of Parents and Children alcohol-related problems conduct problems criminal behaviour mediation Index. décimale : PER Périodiques Résumé : BACKGROUND: Both 'early-onset persistent' and 'adolescent-onset' conduct problems (CPs) are associated with alcohol-related problems in emerging adulthood. The escalation of early CPs into criminal behaviour and heavy alcohol consumption prior to emerging adulthood are both likely to be important pathways. METHODS: Data were analysed from 3,038 young people in a UK birth cohort, the Avon Longitudinal Study of Parents and Children. The exposure was developmental trajectories of CPs ('low', 'childhood-limited', 'adolescent-onset' and 'early-onset persistent') between ages 4 and 13 years. The mediator was latent classes representing heavy alcohol consumption and/ or criminal behaviour at age 15 years. For the outcome, a quadratic latent growth curve was estimated to capture nonlinear change in alcohol-related problems between ages 18 and 23 years. RESULTS: Those with 'early-onset persistent' [b(95% CI) = 1.16 (0.17, 2.14)] and 'adolescent-onset' CPs [b(95% CI) = 1.31 (0.17, 2.45)] had higher levels of alcohol-related problems at age 18 years compared to those with 'low' CPs', but there was little evidence of an association with alcohol-related problems after age 19 years. There was evidence for an indirect effect of 'early-onset persistent' CPs [b(95% CI) = 1.12 (0.52, 1.72)] on alcohol-related problems at age 18 years via the latent classes of alcohol and criminal behaviour in adolescence. This was not found for 'adolescent-onset' CPs [b(95% CI) = 0.35 (-0.36, 1.07)]. CONCLUSIONS: Strong associations exist between early CPs, adolescent alcohol consumption and criminal behaviour and alcohol-related problems at age 18 years. Associations between early CPs and alcohol-related problems weakened considerably across emerging adulthood. En ligne : http://dx.doi.org/10.1111/jcpp.13167 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=426
in Journal of Child Psychology and Psychiatry > 61-6 (June 2020) . - p.721-731[article] Externalising pathways to alcohol-related problems in emerging adulthood [Texte imprimé et/ou numérique] / Gemma HAMMERTON, Auteur ; Alexis C. EDWARDS, Auteur ; Liam MAHEDY, Auteur ; Joseph MURRAY, Auteur ; Barbara MAUGHAN, Auteur ; Kenneth S. KENDLER, Auteur ; Matthew HICKMAN, Auteur ; Jon HERON, Auteur . - p.721-731.
Langues : Anglais (eng)
in Journal of Child Psychology and Psychiatry > 61-6 (June 2020) . - p.721-731
Mots-clés : Avon Longitudinal Study of Parents and Children alcohol-related problems conduct problems criminal behaviour mediation Index. décimale : PER Périodiques Résumé : BACKGROUND: Both 'early-onset persistent' and 'adolescent-onset' conduct problems (CPs) are associated with alcohol-related problems in emerging adulthood. The escalation of early CPs into criminal behaviour and heavy alcohol consumption prior to emerging adulthood are both likely to be important pathways. METHODS: Data were analysed from 3,038 young people in a UK birth cohort, the Avon Longitudinal Study of Parents and Children. The exposure was developmental trajectories of CPs ('low', 'childhood-limited', 'adolescent-onset' and 'early-onset persistent') between ages 4 and 13 years. The mediator was latent classes representing heavy alcohol consumption and/ or criminal behaviour at age 15 years. For the outcome, a quadratic latent growth curve was estimated to capture nonlinear change in alcohol-related problems between ages 18 and 23 years. RESULTS: Those with 'early-onset persistent' [b(95% CI) = 1.16 (0.17, 2.14)] and 'adolescent-onset' CPs [b(95% CI) = 1.31 (0.17, 2.45)] had higher levels of alcohol-related problems at age 18 years compared to those with 'low' CPs', but there was little evidence of an association with alcohol-related problems after age 19 years. There was evidence for an indirect effect of 'early-onset persistent' CPs [b(95% CI) = 1.12 (0.52, 1.72)] on alcohol-related problems at age 18 years via the latent classes of alcohol and criminal behaviour in adolescence. This was not found for 'adolescent-onset' CPs [b(95% CI) = 0.35 (-0.36, 1.07)]. CONCLUSIONS: Strong associations exist between early CPs, adolescent alcohol consumption and criminal behaviour and alcohol-related problems at age 18 years. Associations between early CPs and alcohol-related problems weakened considerably across emerging adulthood. En ligne : http://dx.doi.org/10.1111/jcpp.13167 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=426 Maternal caregiving and girls' depressive symptom and antisocial behavior trajectories: An examination among high-risk youth / Gordon T. HAROLD in Development and Psychopathology, 26-4 (Part 2) (November 2014)
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Titre : Maternal caregiving and girls' depressive symptom and antisocial behavior trajectories: An examination among high-risk youth Type de document : Texte imprimé et/ou numérique Auteurs : Gordon T. HAROLD, Auteur ; Leslie D. LEVE, Auteur ; Hyoun K. KIM, Auteur ; Liam MAHEDY, Auteur ; Darya GAYSINA, Auteur ; Anita THAPAR, Auteur ; Stephan COLLISHAW, Auteur Article en page(s) : p.1461-1475 Langues : Anglais (eng) Index. décimale : PER Périodiques Résumé : Past research has identified maternal depression and family of origin maltreatment as precursors to adolescent depression and antisocial behavior. Caregiving experiences have been identified as a factor that may ameliorate or accentuate adolescent psychopathology trajectories. Using a multilevel approach that pools the unique attributes of two geographically diverse, yet complementary, longitudinal research designs, the present study examined the role of maternal caregiver involvement as a factor that promotes resilience-based trajectories related to depressive symptoms and antisocial behaviors among adolescent girls. The first sample comprises a group of US-based adolescent girls in foster care (n = 100; mean age = 11.50 years), each of whom had a history of childhood maltreatment and removal from their biological parent(s). The second sample comprises a group of UK-based adolescent girls at high familial risk for depression (n = 145; mean age = 11.70 years), with all girls having biological mothers who experienced recurrent depression. Analyses examined the role of maternal caregiving on girls' trajectories of depression and antisocial behavior, while controlling for levels of co-occurring psychopathology at each time point. Results suggest increasing levels of depressive symptoms for girls at familial risk for depression but decreasing levels of depression for girls in foster care. Foster girls' antisocial behavior also decreased over time. Maternal caregiver involvement was differentially related to intercept and slope parameters in both samples. Results are discussed with respect to the benefits of applying multilevel (multisample, multiple outcome) approaches to identifying family-level factors that can reduce negative developmental outcomes in high-risk youth. En ligne : http://dx.doi.org/10.1017/S095457941400114X Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=245
in Development and Psychopathology > 26-4 (Part 2) (November 2014) . - p.1461-1475[article] Maternal caregiving and girls' depressive symptom and antisocial behavior trajectories: An examination among high-risk youth [Texte imprimé et/ou numérique] / Gordon T. HAROLD, Auteur ; Leslie D. LEVE, Auteur ; Hyoun K. KIM, Auteur ; Liam MAHEDY, Auteur ; Darya GAYSINA, Auteur ; Anita THAPAR, Auteur ; Stephan COLLISHAW, Auteur . - p.1461-1475.
Langues : Anglais (eng)
in Development and Psychopathology > 26-4 (Part 2) (November 2014) . - p.1461-1475
Index. décimale : PER Périodiques Résumé : Past research has identified maternal depression and family of origin maltreatment as precursors to adolescent depression and antisocial behavior. Caregiving experiences have been identified as a factor that may ameliorate or accentuate adolescent psychopathology trajectories. Using a multilevel approach that pools the unique attributes of two geographically diverse, yet complementary, longitudinal research designs, the present study examined the role of maternal caregiver involvement as a factor that promotes resilience-based trajectories related to depressive symptoms and antisocial behaviors among adolescent girls. The first sample comprises a group of US-based adolescent girls in foster care (n = 100; mean age = 11.50 years), each of whom had a history of childhood maltreatment and removal from their biological parent(s). The second sample comprises a group of UK-based adolescent girls at high familial risk for depression (n = 145; mean age = 11.70 years), with all girls having biological mothers who experienced recurrent depression. Analyses examined the role of maternal caregiving on girls' trajectories of depression and antisocial behavior, while controlling for levels of co-occurring psychopathology at each time point. Results suggest increasing levels of depressive symptoms for girls at familial risk for depression but decreasing levels of depression for girls in foster care. Foster girls' antisocial behavior also decreased over time. Maternal caregiver involvement was differentially related to intercept and slope parameters in both samples. Results are discussed with respect to the benefits of applying multilevel (multisample, multiple outcome) approaches to identifying family-level factors that can reduce negative developmental outcomes in high-risk youth. En ligne : http://dx.doi.org/10.1017/S095457941400114X Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=245 Maternal perinatal mental health and offspring academic achievement at age 16: the mediating role of childhood executive function / Rebecca M. PEARSON in Journal of Child Psychology and Psychiatry, 57-4 (April 2016)
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Titre : Maternal perinatal mental health and offspring academic achievement at age 16: the mediating role of childhood executive function Type de document : Texte imprimé et/ou numérique Auteurs : Rebecca M. PEARSON, Auteur ; Marc H. BORNSTEIN, Auteur ; Miguel CORDERO, Auteur ; Gaia SCERIF, Auteur ; Liam MAHEDY, Auteur ; Jonathan P. EVANS, Auteur ; Abu ABIOYE, Auteur ; Alan STEIN, Auteur Article en page(s) : p.491-501 Langues : Anglais (eng) Mots-clés : ALSPAC postnatal depression prenatal anxiety executive function academic achievement math Index. décimale : PER Périodiques Résumé : Background Elucidating risk pathways for under-achieving at school can inform strategies to reduce the number of adolescents leaving school without passing grades in core subjects. Maternal depression can compromise the quality of parental care and is associated with multiple negative child outcomes. However, only a few small studies have investigated the association between perinatal maternal depression and poor academic achievement in adolescence. The pathways to explain the risks are also unclear. Method Prospective observational data from 5,801 parents and adolescents taking part in a large UK population cohort (Avon-Longitudinal-Study-of-Parents-and-Children) were used to test associations between maternal and paternal depression and anxiety in the perinatal period, executive function (EF) at age 8, and academic achievement at the end of compulsory school at age 16. Results Adolescents of postnatally depressed mothers were 1.5 times (1.19, 1.94, p = .001) as likely as adolescents of nondepressed mothers to fail to achieve a ‘pass’ grade in math; antenatal anxiety was also an independent predictor of poor math. Disruption in different components of EF explained small but significant proportions of these associations: attentional control explained 16% (4%, 27%, p < .001) of the association with postnatal depression, and working memory explained 17% (13%, 30%, p = .003) of the association with antenatal anxiety. A similar pattern was seen for language grades, but associations were confounded by maternal education. There was no evidence that paternal factors were independently associated with impaired child EF or adolescent exams. Conclusion Maternal postnatal depression and antenatal anxiety are risk factors for adolescents underachieving in math. Preventing, identifying, and treating maternal mental health in the perinatal period could, therefore, potentially increase adolescents’ academic achievement. Different aspects of EF partially mediated these associations. Further work is needed, but if these pathways are causal, improving EF could reduce underachievement in math. En ligne : http://dx.doi.org/10.1111/jcpp.12483 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=285
in Journal of Child Psychology and Psychiatry > 57-4 (April 2016) . - p.491-501[article] Maternal perinatal mental health and offspring academic achievement at age 16: the mediating role of childhood executive function [Texte imprimé et/ou numérique] / Rebecca M. PEARSON, Auteur ; Marc H. BORNSTEIN, Auteur ; Miguel CORDERO, Auteur ; Gaia SCERIF, Auteur ; Liam MAHEDY, Auteur ; Jonathan P. EVANS, Auteur ; Abu ABIOYE, Auteur ; Alan STEIN, Auteur . - p.491-501.
Langues : Anglais (eng)
in Journal of Child Psychology and Psychiatry > 57-4 (April 2016) . - p.491-501
Mots-clés : ALSPAC postnatal depression prenatal anxiety executive function academic achievement math Index. décimale : PER Périodiques Résumé : Background Elucidating risk pathways for under-achieving at school can inform strategies to reduce the number of adolescents leaving school without passing grades in core subjects. Maternal depression can compromise the quality of parental care and is associated with multiple negative child outcomes. However, only a few small studies have investigated the association between perinatal maternal depression and poor academic achievement in adolescence. The pathways to explain the risks are also unclear. Method Prospective observational data from 5,801 parents and adolescents taking part in a large UK population cohort (Avon-Longitudinal-Study-of-Parents-and-Children) were used to test associations between maternal and paternal depression and anxiety in the perinatal period, executive function (EF) at age 8, and academic achievement at the end of compulsory school at age 16. Results Adolescents of postnatally depressed mothers were 1.5 times (1.19, 1.94, p = .001) as likely as adolescents of nondepressed mothers to fail to achieve a ‘pass’ grade in math; antenatal anxiety was also an independent predictor of poor math. Disruption in different components of EF explained small but significant proportions of these associations: attentional control explained 16% (4%, 27%, p < .001) of the association with postnatal depression, and working memory explained 17% (13%, 30%, p = .003) of the association with antenatal anxiety. A similar pattern was seen for language grades, but associations were confounded by maternal education. There was no evidence that paternal factors were independently associated with impaired child EF or adolescent exams. Conclusion Maternal postnatal depression and antenatal anxiety are risk factors for adolescents underachieving in math. Preventing, identifying, and treating maternal mental health in the perinatal period could, therefore, potentially increase adolescents’ academic achievement. Different aspects of EF partially mediated these associations. Further work is needed, but if these pathways are causal, improving EF could reduce underachievement in math. En ligne : http://dx.doi.org/10.1111/jcpp.12483 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=285