This article describes the characteristics and changes that occurred in a phonologically disordered child's sound system over a six year, nine month period. Initially, she exhibited a restricted phonetic repertoire, and her productions were primarily vowels in one- to six-syllable utterances. As she began to acquire consonants, atypical substitutions were used. A shift to common substitutions and subsequent development of consonants still did not result in intelligible speech. Inappropriate use of some suprasegmental features characterize the child's current problems. Some explanations to account for the changes are discussed.
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