Grammatical morphology in language–impaired children acquiring English or German as their first language: A functional perspective

Abstract

ABSTRACTFourteen matched pairs of German-speaking and English-speaking language-impaired children, aged 4;5–6;11, were tested for their knowledge of grammatical morphology and expressive vocabulary, using the Grammatical Closure subtest of the ITPA or its German adaptation, Grammatik in the PET, and the Expressive One-Word Picture Vocabulary Test or the Aktiver Wortschatztest. Children were matched pairwise on the basis of their chronological age, nonverbal IQ, and scores in a sentence imitation and a sentence production task. As predicted, the German-speaking language-impaired children earned higher scores in grammatical morphology and vocabulary than did the English-speaking children. These findings add to a growing body of literature that documents language-specific sensitivity to particular sorts of syntactic devices. They also suggest that the morphological difficulties seen in English-speaking language-impaired children stem in part from the minor functional role played by these forms during the early language learning years.