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01-05-2010

Competing Core Processes in Attention-Deficit/Hyperactivity Disorder (ADHD): Do Working Memory Deficiencies Underlie Behavioral Inhibition Deficits?

Auteurs: R. Matt Alderson, Mark D. Rapport, Kristen L. Hudec, Dustin E. Sarver, Michael J. Kofler

Gepubliceerd in: Research on Child and Adolescent Psychopathology | Uitgave 4/2010

Abstract

The current study examined competing predictions of the working memory and behavioral inhibition models of ADHD. Behavioral inhibition was measured using a conventional stop-signal task, and central executive, phonological, and visuospatial working memory components (Baddeley 2007) were assessed in 14 children with ADHD and 13 typically developing (TD) children. Bootstrapped mediation analyses revealed that the visuospatial working memory system and central executive both mediated the relationship between group membership (ADHD, TD) and stop-signal task performance. Conversely, stop-signal task performance mediated the relationship between group membership and central executive processes, but was unable to account for the phonological and visuospatial storage/rehearsal deficits consistently found in children with ADHD. Comparison of effect size estimates for both models suggested that working memory deficits may underlie impaired stop-signal task performance in children with ADHD. The current findings therefore challenge existing models of ADHD that describe behavioral inhibition as a core deficit of the disorder.

vorige artikel Toddlers’ Temperament Profiles: Stability and Relations to Negative and Positive Parenting

volgende artikel Direct and Indirect Measures of Social Perception, Behavior, and Emotional Functioning in Children with Asperger’s Disorder, Nonverbal Learning Disability, or ADHD

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Titel: Competing Core Processes in Attention-Deficit/Hyperactivity Disorder (ADHD): Do Working Memory Deficiencies Underlie Behavioral Inhibition Deficits?
Auteurs: R. Matt Alderson
Mark D. Rapport
Kristen L. Hudec
Dustin E. Sarver
Michael J. Kofler
Publicatiedatum: 01-05-2010
Uitgeverij: Springer US
Gepubliceerd in: Research on Child and Adolescent Psychopathology / Uitgave 4/2010
Print ISSN: 2730-7166
Elektronisch ISSN: 2730-7174
DOI: https://doi.org/10.1007/s10802-010-9387-0

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