Purpose: Compared with same-age typically developing peers, school-age children with specific language impairment (SLI) exhibit significant deficits in spoken sentence comprehension. They also demonstrate a range of memory limitations. Whether these 2 deficit areas are related is unclear. The present review article aims to (a) review 2 main theoretical accounts of SLI sentence comprehension and various studies supporting each and (b) offer a new, broader, more integrated memory-based framework to guide future SLI research, as we believe the available evidence favors a memory-based perspective of SLI comprehension limitations.
Method:We reviewed the literature on the sentence comprehension abilities of English-speaking children with SLI from 2 theoretical perspectives. Results: The sentence comprehension limitations of children with SLI appear to be more fully captured by a memory-based perspective than by a syntax-specific deficit perspective. Conclusions: Although a memory-based view appears to be the better account of SLI sentence comprehension deficits, this view requires refinement and expansion. Current memorybased perspectives of adult sentence comprehension, with proper modification, offer SLI investigators new, more integrated memory frameworks within which to study and better understand the sentence comprehension abilities of children with SLI.C hildren with specific language impairment (SLI) demonstrate normal-range nonverbal intelligence, hearing sensitivity, and articulation and no neurological impairment or developmental disability, yet they show significant language problems for their age. These children exhibit marked spoken sentence comprehension deficits and show a range of cognitive impairments-chief among them, memory. Whether these children's comprehension difficulties are related to their memory limitations is not clear. In this review article, we (a) review the two historical accounts of SLI sentence comprehension deficits and various studies corresponding to each and (b) propose a new, broader, and integrated memory-based theoretical framework motivated by the adult sentence comprehension literature, as well as the SLI literature, that should prove useful for guiding future research into the sentence comprehension abilities of children with SLI. (See online Supplemental Materials S1 for a list of articles related to the syntax-based account and memory-based account of SLI sentence comprehension.)Compared with our understanding of SLI expressive abilities, understanding of these children's sentence comprehension abilities is relatively sparse. Deeper knowledge of these children's comprehension is greatly needed. First, sentence comprehension is a challenging feat because children must incrementally build and integrate structure and meaning in the moment from a rapidly disappearing signal. Research designed to identify the linguistic and memory mechanisms supporting comprehension is instrumental to advancing our understanding of the nature of SLI sentence comprehension limitations. Doing so ...