for their data collection efforts.

Although further investigation of the understanding of aspect (both comprehension and production) is needed, the results have implications for therapy. The past progressive -ing construction is important, particularly for providing context and background information in narratives, but it is not explicitly taught in schools. Therefore, some focus on the temporal nature of tense-marking in therapy may be beneficial to individuals with SLI in understanding the temporal nature of events and how aspect interacts with tense.

No abstract

This study investigates phonetic categorisation and cue weighting in adolescents and young adults with Specific Language Impairment (SLI). We manipulated two acoustic cues, vowel duration and F1 offset frequency, that signal word-final stop consonant voicing ([t] and [d]) in English. Ten individuals with SLI (14.0-21.4 years), 10 age-matched controls (CA; 14.6-21.9 years) and 10 non-matched adult controls (23.3-36.0 years) labelled synthetic CVC non-words in an identification task. The results showed that the adolescents and young adults with SLI were less consistent than controls in the identification of the good category representatives. The group with SLI also assigned less weight to vowel duration than the adult controls. However, no direct relationship between phonetic categorisation, cue weighting and language skills was found. These findings indicate that some individuals with SLI have speech perception deficits but they are not necessarily associated with oral language skills.

No abstract