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N-Back Accuracy And Neural Activation In Dld, Ronald Gillam

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The present study was designed to explore the general cognitive mechanisms in WM that are often found to be impaired in children with DLD. A continuous auditory N-back task was used to probe cognitive abilities such as sustained attention, storage, updating, and inhibition in monolingual TD children and children with DLD. FNIRS was used to examine the hemodynamic response patterns in the left DLPFC and IPL as children performed 0-back, 1-back, and 2-back tasks. The 0-back task was used in our analysis as a control for sustained attention. The research questions were: 1) Are there differences in N-back response accuracy …

A Comparison Of The Storage-Only Deficit And Joint Mechanism Deficit Hypotheses Of The Verbal Working Memory Storage Capacity Limitation Of Children With Developmental Language Disorder, James W. Montgomery, Ronald B. Gillam, Julia L. Evans, Sarah Schwartz, Jamison D. Fargo

Communicative Disorders and Deaf Education Faculty Publications

Purpose: The storage-only deficit and joint mechanism deficit hypotheses are two possible explanations of the verbal working memory (vWM) storage capacity limitation of school-age children with developmental language disorder (DLD). We assessed the merits of each hypothesis in a large group of children with DLD and a group of same-age typically developing (TD) children.

Method: Participants were 117 children with DLD and 117 propensity-matched TD children 7-11 years of age. Children completed tasks indexing vWM capacity, verbal short-term storage, sustained attention, attention switching, and lexical long-term memory (LTM).

Results: For the DLD group, all of the mechanisms jointly explained 26.5% …