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Auteur Nandita VIJAYAKUMAR |
Documents disponibles écrits par cet auteur (2)



Categorical and dimensional approaches to the developmental relationship between ADHD and irritability / Rania JOHNS-MEAD in Journal of Child Psychology and Psychiatry, 64-10 (October 2023)
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[article]
Titre : Categorical and dimensional approaches to the developmental relationship between ADHD and irritability Type de document : Texte imprimé et/ou numérique Auteurs : Rania JOHNS-MEAD, Auteur ; Nandita VIJAYAKUMAR, Auteur ; Melissa MULRANEY, Auteur ; Glenn MELVIN, Auteur ; George YOUSSEF, Auteur ; Emma SCIBERRAS, Auteur ; Vicki A. ANDERSON, Auteur ; Jan M. NICHOLSON, Auteur ; Daryl EFRON, Auteur ; Philip HAZEL, Auteur ; Tim J. SILK, Auteur Article en page(s) : p.1422-1431 Langues : Anglais (eng) Index. décimale : PER Périodiques Résumé : Background Attention deficit hyperactivity disorder (ADHD) and irritability commonly co-occur, and follow similar developmental trajectories from childhood to adolescence. Understanding of the developmental relationship between these co-occurrences is limited. This study provides a longitudinal assessment of how ADHD diagnostic status and symptom patterns predict change in irritability. Methods A community sample of 337 participants (45.2% ADHD), recruited for the Childhood Attention Project, completed the Affective Reactivity Index (ARI) to measure irritability at baseline (mean age 10.5?years) and follow-up after 18-months. Latent change score models were used to assess how (a) baseline ADHD vs. control group status, (b) baseline symptom domain (inattention, hyperactivity-impulsivity) and (c) longitudinal change in ADHD symptom severity predicted change in irritability. Results Irritability was significantly higher among the ADHD group than controls; however, change in irritability over time did not differ between groups. When assessed across the entire cohort, change in irritability was predicted by higher symptom count in the hyperactive-impulsive domain, but not the inattentive domain. Greater declines in ADHD symptoms over time significantly predicted greater declines in irritability. Baseline ADHD symptom severity was found to significantly predict change in irritability; however, baseline irritability did not significantly predict change in ADHD symptoms. Conclusions ADHD symptoms-particularly hyperactive-impulsive symptoms-predict the degree and trajectory of irritability during childhood and adolescence, even when symptoms are below diagnostic thresholds. The use of longitudinal, dimensional and symptom domain-specific measures provides additional insight into this relationship. En ligne : https://doi.org/10.1111/jcpp.13818 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=512
in Journal of Child Psychology and Psychiatry > 64-10 (October 2023) . - p.1422-1431[article] Categorical and dimensional approaches to the developmental relationship between ADHD and irritability [Texte imprimé et/ou numérique] / Rania JOHNS-MEAD, Auteur ; Nandita VIJAYAKUMAR, Auteur ; Melissa MULRANEY, Auteur ; Glenn MELVIN, Auteur ; George YOUSSEF, Auteur ; Emma SCIBERRAS, Auteur ; Vicki A. ANDERSON, Auteur ; Jan M. NICHOLSON, Auteur ; Daryl EFRON, Auteur ; Philip HAZEL, Auteur ; Tim J. SILK, Auteur . - p.1422-1431.
Langues : Anglais (eng)
in Journal of Child Psychology and Psychiatry > 64-10 (October 2023) . - p.1422-1431
Index. décimale : PER Périodiques Résumé : Background Attention deficit hyperactivity disorder (ADHD) and irritability commonly co-occur, and follow similar developmental trajectories from childhood to adolescence. Understanding of the developmental relationship between these co-occurrences is limited. This study provides a longitudinal assessment of how ADHD diagnostic status and symptom patterns predict change in irritability. Methods A community sample of 337 participants (45.2% ADHD), recruited for the Childhood Attention Project, completed the Affective Reactivity Index (ARI) to measure irritability at baseline (mean age 10.5?years) and follow-up after 18-months. Latent change score models were used to assess how (a) baseline ADHD vs. control group status, (b) baseline symptom domain (inattention, hyperactivity-impulsivity) and (c) longitudinal change in ADHD symptom severity predicted change in irritability. Results Irritability was significantly higher among the ADHD group than controls; however, change in irritability over time did not differ between groups. When assessed across the entire cohort, change in irritability was predicted by higher symptom count in the hyperactive-impulsive domain, but not the inattentive domain. Greater declines in ADHD symptoms over time significantly predicted greater declines in irritability. Baseline ADHD symptom severity was found to significantly predict change in irritability; however, baseline irritability did not significantly predict change in ADHD symptoms. Conclusions ADHD symptoms-particularly hyperactive-impulsive symptoms-predict the degree and trajectory of irritability during childhood and adolescence, even when symptoms are below diagnostic thresholds. The use of longitudinal, dimensional and symptom domain-specific measures provides additional insight into this relationship. En ligne : https://doi.org/10.1111/jcpp.13818 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=512 Parenting x Brain Development interactions as predictors of adolescent depressive symptoms and well-being: Differential susceptibility or diathesis-stress? / Camille DEANE in Development and Psychopathology, 32-1 (February 2020)
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Titre : Parenting x Brain Development interactions as predictors of adolescent depressive symptoms and well-being: Differential susceptibility or diathesis-stress? Type de document : Texte imprimé et/ou numérique Auteurs : Camille DEANE, Auteur ; Nandita VIJAYAKUMAR, Auteur ; Nicholas B. ALLEN, Auteur ; Orli SCHWARTZ, Auteur ; Julian G. SIMMONS, Auteur ; Chad A. BOUSMAN, Auteur ; Christos PANTELIS, Auteur ; Sarah WHITTLE, Auteur Article en page(s) : p.139-150 Langues : Anglais (eng) Mots-clés : brain development depression diathesis-stress differential susceptibility well-being Index. décimale : PER Périodiques Résumé : It is unclear how individual differences in parenting and brain development interact to influence adolescent mental health outcomes. This study examined interactions between structural brain development and observed maternal parenting behavior in the prediction of adolescent depressive symptoms and psychological well-being. Whether findings supported diathesis-stress or differential susceptibility frameworks was tested. Participants completed observed interactions with their mothers during early adolescence (age 13), and the frequency of positive and aggressive maternal behavior were coded. Adolescents also completed structural magnetic resonance imaging scans at three time points: mean ages 13, 17, and 19. Regression models analyzed interactions between maternal behavior and longitudinal brain development in the prediction of late adolescent (age 19) outcomes. Indices designed to distinguish between diathesis-stress and differential susceptibility effects were employed. Results supported differential susceptibility: less thinning of frontal regions was associated with higher well-being in the context of low levels of aggressive maternal behavior, and lower well-being in the context of high levels of aggressive maternal behavior. Findings suggest that reduced frontal cortical thinning during adolescence may underlie increased sensitivity to maternal aggressive behavior for better and worse and highlight the importance of investigating biological vulnerability versus susceptibility. En ligne : http://dx.doi.org/10.1017/s0954579418001475 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=415
in Development and Psychopathology > 32-1 (February 2020) . - p.139-150[article] Parenting x Brain Development interactions as predictors of adolescent depressive symptoms and well-being: Differential susceptibility or diathesis-stress? [Texte imprimé et/ou numérique] / Camille DEANE, Auteur ; Nandita VIJAYAKUMAR, Auteur ; Nicholas B. ALLEN, Auteur ; Orli SCHWARTZ, Auteur ; Julian G. SIMMONS, Auteur ; Chad A. BOUSMAN, Auteur ; Christos PANTELIS, Auteur ; Sarah WHITTLE, Auteur . - p.139-150.
Langues : Anglais (eng)
in Development and Psychopathology > 32-1 (February 2020) . - p.139-150
Mots-clés : brain development depression diathesis-stress differential susceptibility well-being Index. décimale : PER Périodiques Résumé : It is unclear how individual differences in parenting and brain development interact to influence adolescent mental health outcomes. This study examined interactions between structural brain development and observed maternal parenting behavior in the prediction of adolescent depressive symptoms and psychological well-being. Whether findings supported diathesis-stress or differential susceptibility frameworks was tested. Participants completed observed interactions with their mothers during early adolescence (age 13), and the frequency of positive and aggressive maternal behavior were coded. Adolescents also completed structural magnetic resonance imaging scans at three time points: mean ages 13, 17, and 19. Regression models analyzed interactions between maternal behavior and longitudinal brain development in the prediction of late adolescent (age 19) outcomes. Indices designed to distinguish between diathesis-stress and differential susceptibility effects were employed. Results supported differential susceptibility: less thinning of frontal regions was associated with higher well-being in the context of low levels of aggressive maternal behavior, and lower well-being in the context of high levels of aggressive maternal behavior. Findings suggest that reduced frontal cortical thinning during adolescence may underlie increased sensitivity to maternal aggressive behavior for better and worse and highlight the importance of investigating biological vulnerability versus susceptibility. En ligne : http://dx.doi.org/10.1017/s0954579418001475 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=415