Complex Sentence Comprehension and Working Memory in Children With Specific Language Impairment

Julia L. Evans San Diego State University, CA Contact author: James W. Montgomery, Grover W231, Hearing, Speech, and Language Sciences, Ohio University, Athens, OH 45701. E-mail: montgoj1{at}ohio.edu . Purpose: This study investigated the association of 2 mechanisms of working memory (phonological short-term memory [PSTM], attentional resource capacity/allocation) with the sentence comprehension of school-age children with specific language impairment (SLI) and 2 groups of control children. Method: Twenty-four children with SLI, 18 age-matched (CA) children, and 16 language- and memory-matched (LMM) children completed a nonword repetition task (PSTM), the competing language processing task (CLPT; resource capacity/allocation), and a sentence comprehension task comprising complex and simple sentences. Results: (1) The SLI group performed worse than the CA group on each memory task; (2) all 3 groups showed comparable simple sentence comprehension, but for complex sentences, the SLI and LMM groups performed worse than the CA group; (3) for the SLI group, (a) CLPT correlated with complex sentence comprehension, and (b) nonword repetition correlated with simple sentence comprehension; (4) for CA children, neither memory variable correlated with either sentence type; and (5) for LMM children, only CLPT correlated with complex sentences. Conclusions: Comprehension of both complex and simple grammar by school-age children with SLI is a mentally demanding activity, requiring significant working memory resources. KEY WORDS: children, specific language impairment (SLI), working memory, sentence comprehension CiteULike Connotea Del.icio.us Digg Facebook Reddit Technorati Twitter What's this?