Whitney D Fosco, Michael J Kofler, Nicole B Groves, Elizabeth S M Chan, Joseph S Raiker
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引用次数: 25
Abstract
Despite replicated evidence for working memory deficits in youth with ADHD, no study has comprehensively assessed all three primary 'working' subcomponents of the working memory system in these children. Children ages 8-13 with (n = 45) and without (n = 41) ADHD (40% female; Mage = 10.5; 65% Caucasian/Non-Hispanic) completed a counterbalanced battery of nine tasks (three per construct) assessing working memory reordering (maintaining and rearranging information in mind), updating (active monitoring of incoming information and replacing outdated with relevant information), and dual-processing (maintaining information in mind while performing a secondary task). Detailed analytic plans were preregistered. Bayesian t-tests indicated that, at the group level, children with ADHD exhibited significant impairments in working memory reordering (BF10 = 4.64 × 105; d = 1.34) and updating (BF10 = 9.49; d = 0.64), but not dual-processing (BF01 = 1.33; d = 0.37). Overall, 67%-71% of youth with ADHD exhibited impairment in at least one central executive working memory domain. Reordering showed the most ADHD-related impairment, with 75% classified as below average or impaired, and none demonstrating strengths. The majority of children with ADHD (52%-57%) demonstrated average or better abilities in the remaining two domains, with a notable minority demonstrating strengths in updating (8%) and dual-processing (20%). Notably, impairments in domain-general central executive working memory, rather than individual subcomponents, predicted ADHD severity, suggesting that common rather than specific working memory mechanisms may be central to understanding ADHD symptoms. These impairment estimates extend prior work by providing initial evidence that children with ADHD not only exhibit heterogeneous profiles across cognitive domains but also exhibit significant heterogeneity within subcomponents of key cognitive processes.
期刊介绍:
Research on Child and Adolescent Psychopathology brings together the latest innovative research that advances knowledge of psychopathology from infancy through adolescence. The journal publishes studies that have a strong theoretical framework and use a diversity of methods, with an emphasis on empirical studies of the major forms of psychopathology found in childhood disorders (e.g., disruptive behavior disorders, depression, anxiety, and autism spectrum disorder). Studies focus on the epidemiology, etiology, assessment, treatment, prognosis, and developmental course of these forms of psychopathology. Studies highlighting risk and protective factors; the ecology and correlates of children''s emotional, social, and behavior problems; and advances in prevention and treatment are featured.
Research on Child and Adolescent Psychopathology is the official journal of the International Society for Research in Child and Adolescent Psychopathology (ISRCAP), a multidisciplinary scientific society.