Substitutions in Aphasia: Defining the Complexity of Stops
Résumé
The aim of this presentation is to explore the behaviour of stops in French-speaking aphasics. We argue that Government Phonology (GP) is able to reveal mechanisms at play in [labial], [coronal] and [dorsal] substitutions. In a standard approach, Blumstein (1973) proposes that most cases of substitutions show an Interphonemic Distance (ID) of 1, i.e. changes imply only one feature value. We show that ID is unable to reflect differences among consonant classes. By contrast, the postulation of elements in a GP framework (e.g. Harris 1994, Scheer 1998, Cyran 2010 & Backley 2011) enables us to explain the differing patterns of substitution in aphasia.
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