Sonority substitutions in language disorders
نویسندگان
چکیده
In this paper we consider a widely attested process: sonority substitutions whereby sounds of a certain sonority class change into sounds of another sonority class. These sonority substitutions concern, for example, liquids (/l,r/) changing into glides (/j,w/). The target word groen ‘green’ may be realized by an aphasic speaker as [xjUn] or [xwUn]. We will discuss these sonority substitutions in phonological disorders in children and in aphasic patients. We claim that these phenomena cannot adequately be accounted for in current phonological theories. In the first part of this paper (section 2) we will give a short sketch of the way in which the naturalness of phonological processes can be represented in relation to the complexity of their description and the reason why an alternative account is required. In the second part (section 3) we will introduce data from language disorders and discuss the consequences thereof for phonological theories. Finally (section 4 and 5) we will propose a phonological model that is capable of describing sonority substitutions adequately.
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