Abstract
Recent studies comparing coarticulation in adults' and children's speech have yielded contradictory results; some have indicated that children coarticulate more, and others that they coarticulate less. The studies which found more coarticulation in children's speech involved fricatives and the vowels /i/ and /u/; those finding more coarticulation among adults involved velar stops and the vowels /i/ and /a/. It may be that coarticulation is not a unified phenomenon, and that the conflicting results of earlier studies were a consequence of studying different kinds of coarticulation. The present study, therefore, considers all of the things that were separately investigated before. Adults and 3‐ and 4‐year olds were recorded producing the syllables /si/, /su/, /sa/, /∫i/, /∫u/, /∫a/, /ki/, /ku/, and /ka/. The spectral peak of the fricative or stop will be determined, as will the F2 values at the onset of voicing of the vowel. The results of the study will be considered in terms of what they imply about how children acquire the phonological units of their language.
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