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Auteur Alexander S. WEIGARD
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Documents disponibles écrits par cet auteur (3)
Faire une suggestion Affiner la rechercheA diffusion modeling approach to understanding contextual cueing effects in children with ADHD / Alexander WEIGARD in Journal of Child Psychology and Psychiatry, 55-12 (December 2014)
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[article]
Titre : A diffusion modeling approach to understanding contextual cueing effects in children with ADHD Type de document : texte imprimé Auteurs : Alexander WEIGARD, Auteur ; Cynthia L. HUANG-POLLOCK, Auteur Article en page(s) : p.1336-1344 Langues : Anglais (eng) Mots-clés : Contextual cueing diffusion model ADHD implicit learning developmental psychopathology neuropsychology Index. décimale : PER Périodiques Résumé : Background Strong theoretical models suggest implicit learning deficits may exist among children with Attention Deficit Hyperactivity Disorder (ADHD). Method We examine implicit contextual cueing (CC) effects among children with ADHD (n = 72) and non-ADHD Controls (n = 36). Results Using Ratcliff's drift diffusion model, we found that among Controls, the CC effect is due to improvements in attentional guidance and to reductions in response threshold. Children with ADHD did not show a CC effect; although they were able to use implicitly acquired information to deploy attentional focus, they had more difficulty adjusting their response thresholds. Conclusions Improvements in attentional guidance and reductions in response threshold together underlie the CC effect. Results are consistent with neurocognitive models of ADHD that posit subcortical dysfunction but intact spatial attention, and encourage the use of alternative data analytic methods when dealing with reaction time data. En ligne : http://dx.doi.org/10.1111/jcpp.12250 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=243
in Journal of Child Psychology and Psychiatry > 55-12 (December 2014) . - p.1336-1344[article] A diffusion modeling approach to understanding contextual cueing effects in children with ADHD [texte imprimé] / Alexander WEIGARD, Auteur ; Cynthia L. HUANG-POLLOCK, Auteur . - p.1336-1344.
Langues : Anglais (eng)
in Journal of Child Psychology and Psychiatry > 55-12 (December 2014) . - p.1336-1344
Mots-clés : Contextual cueing diffusion model ADHD implicit learning developmental psychopathology neuropsychology Index. décimale : PER Périodiques Résumé : Background Strong theoretical models suggest implicit learning deficits may exist among children with Attention Deficit Hyperactivity Disorder (ADHD). Method We examine implicit contextual cueing (CC) effects among children with ADHD (n = 72) and non-ADHD Controls (n = 36). Results Using Ratcliff's drift diffusion model, we found that among Controls, the CC effect is due to improvements in attentional guidance and to reductions in response threshold. Children with ADHD did not show a CC effect; although they were able to use implicitly acquired information to deploy attentional focus, they had more difficulty adjusting their response thresholds. Conclusions Improvements in attentional guidance and reductions in response threshold together underlie the CC effect. Results are consistent with neurocognitive models of ADHD that posit subcortical dysfunction but intact spatial attention, and encourage the use of alternative data analytic methods when dealing with reaction time data. En ligne : http://dx.doi.org/10.1111/jcpp.12250 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=243 Leveraging bifactor modeling to test prospective direct and indirect effects of adolescent alcohol use and externalizing symptoms on the development of task-general executive functioning / Lora M. COPE ; J.E. HARDEE ; Mary M. HEITZEG ; M.E. SOULES ; Alexander S. WEIGARD ; Craig R. COLDER in Development and Psychopathology, 37-4 (October 2025)
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Titre : Leveraging bifactor modeling to test prospective direct and indirect effects of adolescent alcohol use and externalizing symptoms on the development of task-general executive functioning Type de document : texte imprimé Auteurs : Lora M. COPE, Auteur ; J.E. HARDEE, Auteur ; Mary M. HEITZEG, Auteur ; M.E. SOULES, Auteur ; Alexander S. WEIGARD, Auteur ; Craig R. COLDER, Auteur Article en page(s) : p.1782-1803 Langues : Anglais (eng) Mots-clés : Adolescence alcohol use bifactor modeling executive functioning externalizing Index. décimale : PER Périodiques Résumé : Adolescence is a period of substantial maturation in brain regions underlying Executive Functioning (EF). Adolescence is also associated with initiation and escalation of Alcohol Use (AU), and adolescent AU has been proposed to produce physiological and neurobiological events that derail healthy EF development. However, support has been mixed, which may be due to (1) failure to consider co-occurring externalizing symptoms (including other drug use) and poor social adaptation, and (2) heterogeneity and psychometric limitations in EF measures. We aimed to clarify the AU-EF association by: (1) distinguishing general externalizing symptoms from specific symptoms (AU, aggression, drug use) using bifactor modeling, (2) testing prospective associations between general externalizing symptoms and specific symptoms, and task-general EF, as indexed by a well-validated computational modeling framework (diffusion decision model), and (3) examining indirect pathways from externalizing symptoms to deficits in task-general EF through poor social adaptation. A high-risk longitudinal sample (N = 919) from the Michigan Longitudinal Study was assessed at four time-points spanning early adolescence (10-13 years) to young adulthood (22-25). Results suggested a critical role of social adaptation within peer and school contexts in promoting healthy EF. There was no evidence that specific, neurotoxic effects of alcohol or drug use derailed task-general EF development. En ligne : https://dx.doi.org/10.1017/S095457942400138X Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=567
in Development and Psychopathology > 37-4 (October 2025) . - p.1782-1803[article] Leveraging bifactor modeling to test prospective direct and indirect effects of adolescent alcohol use and externalizing symptoms on the development of task-general executive functioning [texte imprimé] / Lora M. COPE, Auteur ; J.E. HARDEE, Auteur ; Mary M. HEITZEG, Auteur ; M.E. SOULES, Auteur ; Alexander S. WEIGARD, Auteur ; Craig R. COLDER, Auteur . - p.1782-1803.
Langues : Anglais (eng)
in Development and Psychopathology > 37-4 (October 2025) . - p.1782-1803
Mots-clés : Adolescence alcohol use bifactor modeling executive functioning externalizing Index. décimale : PER Périodiques Résumé : Adolescence is a period of substantial maturation in brain regions underlying Executive Functioning (EF). Adolescence is also associated with initiation and escalation of Alcohol Use (AU), and adolescent AU has been proposed to produce physiological and neurobiological events that derail healthy EF development. However, support has been mixed, which may be due to (1) failure to consider co-occurring externalizing symptoms (including other drug use) and poor social adaptation, and (2) heterogeneity and psychometric limitations in EF measures. We aimed to clarify the AU-EF association by: (1) distinguishing general externalizing symptoms from specific symptoms (AU, aggression, drug use) using bifactor modeling, (2) testing prospective associations between general externalizing symptoms and specific symptoms, and task-general EF, as indexed by a well-validated computational modeling framework (diffusion decision model), and (3) examining indirect pathways from externalizing symptoms to deficits in task-general EF through poor social adaptation. A high-risk longitudinal sample (N = 919) from the Michigan Longitudinal Study was assessed at four time-points spanning early adolescence (10-13 years) to young adulthood (22-25). Results suggested a critical role of social adaptation within peer and school contexts in promoting healthy EF. There was no evidence that specific, neurotoxic effects of alcohol or drug use derailed task-general EF development. En ligne : https://dx.doi.org/10.1017/S095457942400138X Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=567 The role of parenting in the intergenerational transmission of executive functioning: A genetically informed approach / Rachel C. TOMLINSON in Development and Psychopathology, 34-5 (December 2022)
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Titre : The role of parenting in the intergenerational transmission of executive functioning: A genetically informed approach Type de document : texte imprimé Auteurs : Rachel C. TOMLINSON, Auteur ; Luke W. HYDE, Auteur ; Alexander S. WEIGARD, Auteur ; Kelly L. KLUMP, Auteur ; S. Alexandra BURT, Auteur Article en page(s) : p.1731-1743 Langues : Anglais (eng) Mots-clés : harsh parenting nuclear twin family model warm parenting Index. décimale : PER Périodiques Résumé : Deficits in executive functioning both run in families and serve as a transdiagnostic risk factor for psychopathology. The present study employed twin modeling to examine parenting as an environmental pathway underlying the intergenerational transmission of executive functioning in an at-risk community sample of children and adolescents (N = 354 pairs, 167 monozygotic). Using structural equation modeling of multi-informant reports of parenting and a multi-method measure of child executive functioning, we found that better parent executive functioning related to less harsh, warmer parenting, which in turn related to better child executive functioning. Second, we assessed the etiology of executive functioning via the nuclear twin family model, finding large non-shared environmental effects (E = .69) and low-to-moderate heritability (A = .22). We did not find evidence of shared environmental effects or passive genotype “environment correlation. Third, a bivariate twin model revealed significant shared environmental overlap between both warm and harsh parenting and child executive functioning (which may indicate either passive genotype “environment correlation or environmental mediation), and non-shared environmental overlap between only harsh parenting and child executive functioning (indicating an effect of harsh parenting separable from genetic confounds). In summary, genetics contribute to the intergenerational transmission of executive functioning, with environmental mechanisms, including harsh parenting, also making unique contributions. En ligne : http://dx.doi.org/10.1017/S0954579422000645 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.1731-1743[article] The role of parenting in the intergenerational transmission of executive functioning: A genetically informed approach [texte imprimé] / Rachel C. TOMLINSON, Auteur ; Luke W. HYDE, Auteur ; Alexander S. WEIGARD, Auteur ; Kelly L. KLUMP, Auteur ; S. Alexandra BURT, Auteur . - p.1731-1743.
Langues : Anglais (eng)
in Development and Psychopathology > 34-5 (December 2022) . - p.1731-1743
Mots-clés : harsh parenting nuclear twin family model warm parenting Index. décimale : PER Périodiques Résumé : Deficits in executive functioning both run in families and serve as a transdiagnostic risk factor for psychopathology. The present study employed twin modeling to examine parenting as an environmental pathway underlying the intergenerational transmission of executive functioning in an at-risk community sample of children and adolescents (N = 354 pairs, 167 monozygotic). Using structural equation modeling of multi-informant reports of parenting and a multi-method measure of child executive functioning, we found that better parent executive functioning related to less harsh, warmer parenting, which in turn related to better child executive functioning. Second, we assessed the etiology of executive functioning via the nuclear twin family model, finding large non-shared environmental effects (E = .69) and low-to-moderate heritability (A = .22). We did not find evidence of shared environmental effects or passive genotype “environment correlation. Third, a bivariate twin model revealed significant shared environmental overlap between both warm and harsh parenting and child executive functioning (which may indicate either passive genotype “environment correlation or environmental mediation), and non-shared environmental overlap between only harsh parenting and child executive functioning (indicating an effect of harsh parenting separable from genetic confounds). In summary, genetics contribute to the intergenerational transmission of executive functioning, with environmental mechanisms, including harsh parenting, also making unique contributions. En ligne : http://dx.doi.org/10.1017/S0954579422000645 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=492

