Neural mechanisms of negative reinforcement in children and adolescents with autism spectrum disorders / Cara R. DAMIANO in Journal of Neurodevelopmental Disorders, 7-1 (December 2015)  

Public ISBD [article]  inJournal of Neurodevelopmental Disorders > 7-1 (December 2015) . - p.12 Titre : Neural mechanisms of negative reinforcement in children and adolescents with autism spectrum disorders Type de document : Texte imprimé et/ou numérique Auteurs : Cara R. DAMIANO, Auteur ; D. C. COCKRELL, Auteur ; K. DUNLAP, Auteur ; E. K. HANNA, Auteur ; S. MILLER, Auteur ; Joshua BIZZELL, Auteur ; M. KOVAC, Auteur ; Lauren M. TURNER-BROWN, Auteur ; J. SIDERIS, Auteur ; J. KINARD, Auteur ; Gabriel S. DICHTER, Auteur Article en page(s) : p.12 Langues : Anglais (eng) Mots-clés : Autism spectrum disorders (ASD)  Negative reinforcement  Reward loss  Reward motivation  Reward processing  Social motivation Index. décimale : PER Périodiques Résumé : BACKGROUND: Previous research has found accumulating evidence for atypical reward processing in autism spectrum disorders (ASD), particularly in the context of social rewards. Yet, this line of research has focused largely on positive social reinforcement, while little is known about the processing of negative reinforcement in individuals with ASD. METHODS: The present study examined neural responses to social negative reinforcement (a face displaying negative affect) and non-social negative reinforcement (monetary loss) in children with ASD relative to typically developing children, using functional magnetic resonance imaging (fMRI). RESULTS: We found that children with ASD demonstrated hypoactivation of the right caudate nucleus while anticipating non-social negative reinforcement and hypoactivation of a network of frontostriatal regions (including the nucleus accumbens, caudate nucleus, and putamen) while anticipating social negative reinforcement. In addition, activation of the right caudate nucleus during non-social negative reinforcement was associated with individual differences in social motivation. CONCLUSIONS: These results suggest that atypical responding to negative reinforcement in children with ASD may contribute to social motivational deficits in this population. En ligne : http://dx.doi.org/10.1186/s11689-015-9107-8 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=347 [article] Neural mechanisms of negative reinforcement in children and adolescents with autism spectrum disorders [Texte imprimé et/ou numérique] / Cara R. DAMIANO, Auteur ; D. C. COCKRELL, Auteur ; K. DUNLAP, Auteur ; E. K. HANNA, Auteur ; S. MILLER, Auteur ; Joshua BIZZELL, Auteur ; M. KOVAC, Auteur ; Lauren M. TURNER-BROWN, Auteur ; J. SIDERIS, Auteur ; J. KINARD, Auteur ; Gabriel S. DICHTER, Auteur . - p.12. Langues : Anglais (eng) in Journal of Neurodevelopmental Disorders > 7-1 (December 2015) . - p.12 Mots-clés : Autism spectrum disorders (ASD)  Negative reinforcement  Reward loss  Reward motivation  Reward processing  Social motivation Index. décimale : PER Périodiques Résumé : BACKGROUND: Previous research has found accumulating evidence for atypical reward processing in autism spectrum disorders (ASD), particularly in the context of social rewards. Yet, this line of research has focused largely on positive social reinforcement, while little is known about the processing of negative reinforcement in individuals with ASD. METHODS: The present study examined neural responses to social negative reinforcement (a face displaying negative affect) and non-social negative reinforcement (monetary loss) in children with ASD relative to typically developing children, using functional magnetic resonance imaging (fMRI). RESULTS: We found that children with ASD demonstrated hypoactivation of the right caudate nucleus while anticipating non-social negative reinforcement and hypoactivation of a network of frontostriatal regions (including the nucleus accumbens, caudate nucleus, and putamen) while anticipating social negative reinforcement. In addition, activation of the right caudate nucleus during non-social negative reinforcement was associated with individual differences in social motivation. CONCLUSIONS: These results suggest that atypical responding to negative reinforcement in children with ASD may contribute to social motivational deficits in this population. En ligne : http://dx.doi.org/10.1186/s11689-015-9107-8 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=347

Parent-Mediated Intervention for One-Year-Olds Screened as At-Risk for Autism Spectrum Disorder: A Randomized Controlled Trial / Linda R. WATSON in Journal of Autism and Developmental Disorders, 47-11 (November 2017)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 47-11 (November 2017) . - p.3520-3540 Titre : Parent-Mediated Intervention for One-Year-Olds Screened as At-Risk for Autism Spectrum Disorder: A Randomized Controlled Trial Type de document : Texte imprimé et/ou numérique Auteurs : Linda R. WATSON, Auteur ; Elizabeth R. CRAIS, Auteur ; Grace T. BARANEK, Auteur ; Lauren M. TURNER-BROWN, Auteur ; J. SIDERIS, Auteur ; L. WAKEFORD, Auteur ; J. KINARD, Auteur ; J. S. REZNICK, Auteur ; K. L. MARTIN, Auteur ; Sallie W. NOWELL, Auteur Article en page(s) : p.3520-3540 Langues : Anglais (eng) Mots-clés : Autism spectrum disorder  Infants  Intervention  Prodromal  Responsiveness  Screening Index. décimale : PER Périodiques Résumé : Theoretically, interventions initiated with at-risk infants prior to the point in time a definitive autism spectrum disorder (ASD) diagnosis can be made will improve outcomes. Pursuing this idea, we tested the efficacy of a parent-mediated early intervention called Adapted Responsive Teaching (ART) via a randomized controlled trial with 87 one-year-olds identified by community screening with the First Year Inventory as at-risk of later ASD diagnoses. We found minimal evidence for main effects of ART on child outcomes. However, ART group parents showed significantly greater increases in responsiveness to their infants than control group parents. Further, significant indirect (mediation) effects of assignment group on multiple child outcomes through changes in parent responsiveness supported our theory of change. En ligne : http://dx.doi.org/10.1007/s10803-017-3268-0 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=325 [article] Parent-Mediated Intervention for One-Year-Olds Screened as At-Risk for Autism Spectrum Disorder: A Randomized Controlled Trial [Texte imprimé et/ou numérique] / Linda R. WATSON, Auteur ; Elizabeth R. CRAIS, Auteur ; Grace T. BARANEK, Auteur ; Lauren M. TURNER-BROWN, Auteur ; J. SIDERIS, Auteur ; L. WAKEFORD, Auteur ; J. KINARD, Auteur ; J. S. REZNICK, Auteur ; K. L. MARTIN, Auteur ; Sallie W. NOWELL, Auteur . - p.3520-3540. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 47-11 (November 2017) . - p.3520-3540 Mots-clés : Autism spectrum disorder  Infants  Intervention  Prodromal  Responsiveness  Screening Index. décimale : PER Périodiques Résumé : Theoretically, interventions initiated with at-risk infants prior to the point in time a definitive autism spectrum disorder (ASD) diagnosis can be made will improve outcomes. Pursuing this idea, we tested the efficacy of a parent-mediated early intervention called Adapted Responsive Teaching (ART) via a randomized controlled trial with 87 one-year-olds identified by community screening with the First Year Inventory as at-risk of later ASD diagnoses. We found minimal evidence for main effects of ART on child outcomes. However, ART group parents showed significantly greater increases in responsiveness to their infants than control group parents. Further, significant indirect (mediation) effects of assignment group on multiple child outcomes through changes in parent responsiveness supported our theory of change. En ligne : http://dx.doi.org/10.1007/s10803-017-3268-0 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=325

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