Journal
JOURNAL OF SPEECH LANGUAGE AND HEARING RESEARCH
Volume 46, Issue 1, Pages 43-55Publisher
AMER SPEECH-LANGUAGE-HEARING ASSOC
DOI: 10.1044/1092-4388(2003/004)
Keywords
specific language impairment; grammatical morphology; grammar; past tense; participle
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Children with specific language impairment (SLI) use past tense -ed in fewer obligatory contexts than younger normally developing children matched for mean length of utterance (MLU). In this study, the use of passive participle -ed (e.g., kissed in The frog got kissed by the kitty) as well as past tense -ed was examined in children with SLI, normally developing children matched for age (ND-A), and normally developing children matched for MLU (ND-MLU). The children with SLI used both past tense -ed and passive participle -ed in fewer obligatory contexts... than both the ND-A and the ND-MLU children. Only the children with SLI had greater difficulty with, past tense -ed than with passive participle -ed. The pattern of findings indicates that the surface properties of -ed cannot adequately account for the past tense -ed difficulty shown by the children with SILL However, the fact that the children with SLI were less consistent than the ND-MLU children in using passive participle -ed suggests that either the surface properties of -ed are responsible for a portion of the difficulty or these children have a separate, non-tense-related deficit in the area of verb morphology.
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