Abstract
Participants were six Cantonese-speaking 5-year-old children with SLI and six 3-year-old typically developing children, individually matched on MLU (TD-MLU). Their use of the perfective aspect marker zo2 was examined in 900-utterance conversational language samples. Group differences in the token frequency of zo2 and the percentage of occurrence of zo2 in all predicate tokens were not significant. The two groups also used zo2 with a similar number of different predicates, and in a comparable percentage of predicate types. Even though the interaction effect of interest, that is between group and semantic class types (telic vs. atelic verbs) on the use of zo2 was not statistically significant, a child-by-child analysis revealed a trend that children with SLI are restricted in their use of this marker with telic verbs, and not as likely to extend its use with atelic verbs. Further investigation of aspectual markings in children with SLI is implicated in this study.
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