The purpose of this study was to explore the production of infinitival complements by children with specific language impairment (SLI) as compared with mean length of utterance (MLU)-matched children in an effort to clarify inconsistencies in the literature. Spontaneous language samples were analysed for infinitival complements (reduced…

Morphosyntactic skills in spontaneous and elicited production of a 7-year-old boy with specific language impairment (SLI) were examined and compared to those of younger, mean length of utterance (MLU)-matched, typically-developing children. This study focused on inflectional phrase structures as well as complex constructions in order to…

Purpose: Although mean length of utterance (MLU) is a useful benchmark in studies of children with specific language impairment (SLI), some empirical and interpretive issues are unresolved. The authors report on 2 studies examining, respectively, the concurrent validity and temporal stability of MLU equivalency between children with SLI and…

Language sample analysis measures have long been promoted as exhibiting greater ecological validity than formal testing in the assessment of language disorder in children. In practice, their use is often restricted to preschool children, owing to lack of normative information, as well as criticisms of the validity of commonly used measures for the…

Purpose: The authors describe the procedures used to explain an unexpected finding that adolescents with Down syndrome (DS) had a lower mean length of utterance (MLU) than typically developing (TD) children in interviews without picture support, but not in narratives supported by wordless picture books. They hypothesize that the picture support of…