Kelly Farquharson1, Tiffany P Hogan2, John E Bernthal3. 1. a Department of Communication Sciences and Disorders , Emerson College , Boston , MA , USA. 2. b MGH-Institute of Health Professions , Boston , MA , USA , and. 3. c University of Nebraska-Lincoln, Special Education and Communication Disorders , Lincoln , NE , USA.
Abstract
PURPOSE: The aim of this study was to explore the role of working memory processes as a possible cognitive underpinning of persistent speech sound disorders (SSD). METHOD: Forty school-aged children were enrolled; 20 children with persistent SSD (P-SSD) and 20 typically developing children. Children participated in three working memory tasks - one to target each of the components in Baddeley's working memory model: phonological loop, visual spatial sketchpad and central executive. RESULT: Children with P-SSD performed poorly only on the phonological loop tasks compared to their typically developing age-matched peers. However, mediation analyses revealed that the relation between working memory and a P-SSD was reliant upon nonverbal intelligence. CONCLUSION: These results suggest that co-morbid low-average nonverbal intelligence are linked to poor working memory in children with P-SSD. Theoretical and clinical implications are discussed.
PURPOSE: The aim of this study was to explore the role of working memory processes as a possible cognitive underpinning of persistent speech sound disorders (SSD). METHOD: Forty school-aged children were enrolled; 20 children with persistent SSD (P-SSD) and 20 typically developing children. Children participated in three working memory tasks - one to target each of the components in Baddeley's working memory model: phonological loop, visual spatial sketchpad and central executive. RESULT: Children with P-SSD performed poorly only on the phonological loop tasks compared to their typically developing age-matched peers. However, mediation analyses revealed that the relation between working memory and a P-SSD was reliant upon nonverbal intelligence. CONCLUSION: These results suggest that co-morbid low-average nonverbal intelligence are linked to poor working memory in children with P-SSD. Theoretical and clinical implications are discussed.
Entities:
Keywords:
Baddeley’s working memory model; nonverbal intelligence; school-aged children; speech sound disorders; working memory
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