23.4044, Diss: Phonetics/ Phonology/ Psycholing: Key: 'Phonological and Phonetic Biases in Speech Perception'

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LINGUIST List: Vol-23-4044. Mon Oct 01 2012. ISSN: 1069 - 4875.

Subject: 23.4044, Diss: Phonetics/ Phonology/ Psycholing: Key: 'Phonological and Phonetic Biases in Speech Perception'

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Date: Mon, 01 Oct 2012 10:44:30
From: Michael Key [key at labphonologist.org]
Subject: Phonological and Phonetic Biases in Speech Perception

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Institution: University of Massachusetts at Amherst 
Program: Department of Linguistics 
Dissertation Status: Completed 
Degree Date: 2012 

Author: Michael Key

Dissertation Title: Phonological and Phonetic Biases in Speech Perception 

Dissertation URL:  http://key.labphonologist.org/dissertation

Linguistic Field(s): Phonetics
                     Phonology
                     Psycholinguistics


Dissertation Director(s):
John Kingston

Dissertation Abstract:

This dissertation investigates how knowledge of phonological 
generalizations influences speech perception, with a particular focus 
on evidence that phonological processing is autonomous from (rather 
than interactive with) auditory processing. A model is proposed in 
which auditory cue constraints and markedness constraints interact to 
determine a surface representation, which is taken to be isomorphic to 
the listener's perceptual response under some psychophysical 
conditions. Constraint ranking is argued to be stochastic in this model 
on the basis that the probability of computing the least marked surface 
representation (and perceptual response) is greater when the input 
auditory representation is ambiguous between two alternative 
categories than when it strongly favors a category that completes a 
more marked surface representation (and perceptual response). 
Experimental evidence is presented to demonstrate that (1) native 
listeners of languages with assimilation processes confuse 
unassimilated and assimilated sequences when discrimination is 
category-based (but not when discrimination is based on auditory 
representations), (2) German listeners use phonological context to 
anticipate the presence of a following allophone iff it is the allophone 
with broader distribution, and (3) that non-rhotic English listeners 
perceptually epenthesize and delete /r/ and they also may perceptually 
undo /r/ deletion. (1) suggests that knowledge of a phonological 
generalization may be applied only after auditory processing, which is a 
result consistent with the predictions of 'autonomous theory' and 
inconsistent with the predictions of 'interactive theory'. (2) and (3) show 
that phonological effects in speech perception go beyond biases 
against illicit sequences and lead to the novel proposals that positive 
constraints (2) and opposite faithfulness constraints (3) exist in the 
perceptual grammar. 






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LINGUIST List: Vol-23-4044	
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