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Détail de l'auteur
Auteur Anne-Claude BEDARD |
Documents disponibles écrits par cet auteur (2)
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Effects of methylphenidate on working memory components: influence of measurement / Anne-Claude BEDARD in Journal of Child Psychology and Psychiatry, 48-9 (September 2007)
[article]
Titre : Effects of methylphenidate on working memory components: influence of measurement Type de document : Texte imprimé et/ou numérique Auteurs : Anne-Claude BEDARD, Auteur ; Rosemary TANNOCK, Auteur ; Umesh JAIN, Auteur ; Sheilah HOGG-JOHNSON, Auteur Année de publication : 2007 Article en page(s) : p.872–880 Langues : Anglais (eng) Mots-clés : Attention-deficit-hyperactivity-disorder methylphenidate working-memory children adolescents clinical-trial Index. décimale : PER Périodiques Résumé : Background: To investigate the effects of methylphenidate (MPH) on components of working memory (WM) in attention-deficit hyperactivity disorder (ADHD) and determine the responsiveness of WM measures to MPH.
Methods: Participants were a clinical sample of 50 children and adolescents with ADHD, aged 6 to 16 years old, who participated in an acute randomized, double-blind, placebo-controlled, crossover trial with single challenges of three MPH doses. Four components of WM were investigated, which varied in processing demands (storage versus manipulation of information) and modality (auditory-verbal; visual-spatial), each of which was indexed by a minimum of two separate measures.
Results: MPH improved the ability to store visual-spatial information irrespective of instrument used, but had no effects on the storage of auditory-verbal information. By contrast, MPH enhanced the ability to manipulate both auditory-verbal and visual-spatial information, although effects were instrument specific in both cases.
Conclusions: MPH effects on WM are selective: they vary as a function of WM component and measurement.En ligne : http://dx.doi.org/10.1111/j.1469-7610.2007.01760.x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=163
in Journal of Child Psychology and Psychiatry > 48-9 (September 2007) . - p.872–880[article] Effects of methylphenidate on working memory components: influence of measurement [Texte imprimé et/ou numérique] / Anne-Claude BEDARD, Auteur ; Rosemary TANNOCK, Auteur ; Umesh JAIN, Auteur ; Sheilah HOGG-JOHNSON, Auteur . - 2007 . - p.872–880.
Langues : Anglais (eng)
in Journal of Child Psychology and Psychiatry > 48-9 (September 2007) . - p.872–880
Mots-clés : Attention-deficit-hyperactivity-disorder methylphenidate working-memory children adolescents clinical-trial Index. décimale : PER Périodiques Résumé : Background: To investigate the effects of methylphenidate (MPH) on components of working memory (WM) in attention-deficit hyperactivity disorder (ADHD) and determine the responsiveness of WM measures to MPH.
Methods: Participants were a clinical sample of 50 children and adolescents with ADHD, aged 6 to 16 years old, who participated in an acute randomized, double-blind, placebo-controlled, crossover trial with single challenges of three MPH doses. Four components of WM were investigated, which varied in processing demands (storage versus manipulation of information) and modality (auditory-verbal; visual-spatial), each of which was indexed by a minimum of two separate measures.
Results: MPH improved the ability to store visual-spatial information irrespective of instrument used, but had no effects on the storage of auditory-verbal information. By contrast, MPH enhanced the ability to manipulate both auditory-verbal and visual-spatial information, although effects were instrument specific in both cases.
Conclusions: MPH effects on WM are selective: they vary as a function of WM component and measurement.En ligne : http://dx.doi.org/10.1111/j.1469-7610.2007.01760.x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=163 A randomized clinical trial of Cogmed Working Memory Training in school-age children with ADHD: a replication in a diverse sample using a control condition / Anil CHACKO in Journal of Child Psychology and Psychiatry, 55-3 (March 2014)
[article]
Titre : A randomized clinical trial of Cogmed Working Memory Training in school-age children with ADHD: a replication in a diverse sample using a control condition Type de document : Texte imprimé et/ou numérique Auteurs : Anil CHACKO, Auteur ; Anne-Claude BEDARD, Auteur ; D. J. MARKS, Auteur ; N. FEIRSEN, Auteur ; J. Z. UDERMAN, Auteur ; A. CHIMIKLIS, Auteur ; E. RAJWAN, Auteur ; M. CORNWELL, Auteur ; L. ANDERSON, Auteur ; A. ZWILLING, Auteur ; M. RAMON, Auteur Article en page(s) : p.247-255 Langues : Anglais (eng) Mots-clés : ADHD treatment working memory cognitive training Index. décimale : PER Périodiques Résumé : Background Cogmed Working Memory Training (CWMT) has received considerable attention as a promising intervention for the treatment of Attention-Deficit/Hyperactivity Disorder (ADHD) in children. At the same time, methodological weaknesses in previous clinical trials call into question reported efficacy of CWMT. In particular, lack of equivalence in key aspects of CWMT (i.e., contingent reinforcement, time-on-task with computer training, parent–child interactions, supportive coaching) between CWMT and placebo versions of CWMT used in previous trials may account for the beneficial outcomes favoring CWMT. Methods Eighty-five 7- to 11-year old school-age children with ADHD (66 male; 78%) were randomized to either standard CWMT (CWMT Active) or a well-controlled CWMT placebo condition (CWMT Placebo) and evaluated before and 3 weeks after treatment. Dependent measures included parent and teacher ratings of ADHD symptoms; objective measures of attention, activity level, and impulsivity; and psychometric indices of working memory and academic achievement (Clinical trial title: Combined cognitive remediation and behavioral intervention for the treatment of Attention-Deficit/Hyperactivity Disorder; http://clinicaltrials.gov/ct2/show/NCT01137318). Results CWMT Active participants demonstrated significantly greater improvements in verbal and nonverbal working memory storage, but evidenced no discernible gains in working memory storage plus processing/manipulation. In addition, no treatment group differences were observed for any other outcome measures. Conclusions When a more rigorous comparison condition is utilized, CWMT demonstrates effects on certain aspects of working memory in children with ADHD; however, CWMT does not appear to foster treatment generalization to other domains of functioning. As such, CWMT should not be considered a viable treatment for children with ADHD. En ligne : http://dx.doi.org/10.1111/jcpp.12146 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=226
in Journal of Child Psychology and Psychiatry > 55-3 (March 2014) . - p.247-255[article] A randomized clinical trial of Cogmed Working Memory Training in school-age children with ADHD: a replication in a diverse sample using a control condition [Texte imprimé et/ou numérique] / Anil CHACKO, Auteur ; Anne-Claude BEDARD, Auteur ; D. J. MARKS, Auteur ; N. FEIRSEN, Auteur ; J. Z. UDERMAN, Auteur ; A. CHIMIKLIS, Auteur ; E. RAJWAN, Auteur ; M. CORNWELL, Auteur ; L. ANDERSON, Auteur ; A. ZWILLING, Auteur ; M. RAMON, Auteur . - p.247-255.
Langues : Anglais (eng)
in Journal of Child Psychology and Psychiatry > 55-3 (March 2014) . - p.247-255
Mots-clés : ADHD treatment working memory cognitive training Index. décimale : PER Périodiques Résumé : Background Cogmed Working Memory Training (CWMT) has received considerable attention as a promising intervention for the treatment of Attention-Deficit/Hyperactivity Disorder (ADHD) in children. At the same time, methodological weaknesses in previous clinical trials call into question reported efficacy of CWMT. In particular, lack of equivalence in key aspects of CWMT (i.e., contingent reinforcement, time-on-task with computer training, parent–child interactions, supportive coaching) between CWMT and placebo versions of CWMT used in previous trials may account for the beneficial outcomes favoring CWMT. Methods Eighty-five 7- to 11-year old school-age children with ADHD (66 male; 78%) were randomized to either standard CWMT (CWMT Active) or a well-controlled CWMT placebo condition (CWMT Placebo) and evaluated before and 3 weeks after treatment. Dependent measures included parent and teacher ratings of ADHD symptoms; objective measures of attention, activity level, and impulsivity; and psychometric indices of working memory and academic achievement (Clinical trial title: Combined cognitive remediation and behavioral intervention for the treatment of Attention-Deficit/Hyperactivity Disorder; http://clinicaltrials.gov/ct2/show/NCT01137318). Results CWMT Active participants demonstrated significantly greater improvements in verbal and nonverbal working memory storage, but evidenced no discernible gains in working memory storage plus processing/manipulation. In addition, no treatment group differences were observed for any other outcome measures. Conclusions When a more rigorous comparison condition is utilized, CWMT demonstrates effects on certain aspects of working memory in children with ADHD; however, CWMT does not appear to foster treatment generalization to other domains of functioning. As such, CWMT should not be considered a viable treatment for children with ADHD. En ligne : http://dx.doi.org/10.1111/jcpp.12146 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=226