Spoken language samples of New Zealand children in conversation and narration

Abstract

A New Zealand (NZ) database has been created comprising conversational and narrative spoken language samples from 268 children aged between 4;5 and 7;6 years. This paper addresses several questions related to the development and validation of the database and provides a comparison of this NZ database with an American database of language samples. Analyses of the spoken language samples contained in the database revealed a clear developmental trend of increasing syntactic complexity, semantic diversity and verbal productivity with increasing age of the participants. In addition, elicitation context for the language samples had a significant impact on language production measures obtained. The narrative language sampling contexts elicited more syntactically complex language samples. To ascertain if the New Zealand database is useful in identifying children with language impairment, oral narrative transcripts from 21 children with identified reading comprehension difficulties and mild spoken language impairment were compared to the database. The results indicated that the database was sensitive to language impairment. These children showed a much higher incidence of errors at word-level and generally produced shorter sentences compared to the language samples in the database. Comparisons between the NZ and American databases of language samples revealed that six-year-old NZ children showed stronger expressive language skills than the American children.