Understanding the Conditions for Detecting a Phonology to Articulation Cascade in Speech Production

dc.contributor.advisorFischer-Baum, Simonen_US
dc.contributor.committeeMemberMartin, Randien_US
dc.contributor.committeeMemberNiedzielski, Nancyen_US
dc.creatorIrons, Sarah Ten_US
dc.date.accessioned2023-09-01T21:06:47Zen_US
dc.date.available2023-09-01T21:06:47Zen_US
dc.date.created2023-08en_US
dc.date.issued2023-08-11en_US
dc.date.submittedAugust 2023en_US
dc.date.updated2023-09-01T21:06:47Zen_US
dc.description.abstractPhonetic distortions, subtle acoustic traces of how a competitor would be produced on the articulation of a response, have been used as evidence for cascading activation from phonological planning to articulatory implementation, that is that information flows between these levels of representation in the language production system prior to selection at the phonological planning level. Phonetic distortions are a robust finding, when focusing on speech errors, produced either in tongue twisters (Baese-Berk & Goldrick, 2009; Frisch & Wright, 2002; Goldrick, 2016; Goldrick & Blumstein, 2006; Goldrick et al., 2016; Goldstein et al., 2007; McMillan & Corley, 2010; Pouplier, 2007) or in naturalistic speech (Alderete et al., 2021). However, a recent study failed to find evidence for phonetic distortions in another context in which it would be expected, single word reading aloud of irregular words in which the lexical and sublexical routes generate phonological plans for different vowels (Irons, 2020). The goal of this dissertation is to understand why this discrepancy exists, that is why phonetic distortions are observed in some, but not all cases, in which they are predicted by cascading activation theories of speech production as there are many, potentially critical differences between the paradigms that do and do not observe phonetic distortions. In this dissertation, I present two experiments, one using tongue twisters, and one using picture-word interference, designed specifically to control for differences in errors, scope of planning and word position, to allow us to better understand when a cascade from phonological planning to articulatory implementation can be observed phonetically. Similar to past tongue twister work (Baese-Berk & Goldrick, 2009; Frisch & Wright, 2002; Goldrick, 2016; Goldrick & Blumstein, 2006; Goldrick et al., 2016; Goldstein et al., 2007; McMillan & Corley, 2010; Pouplier, 2007) I observed phonetic distortions, evidence for cascading activation in onset tongue twisters. In nucleus tongue twisters I found that cascading activation might present differently in vowels than it does in consonants. We did not, however, observe phonetic distortions in picture-word interference, therefore open questions remain about how scope of planning and error effects may be responsible for phonetic distortion evidence for cascading activation.en_US
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationIrons, Sarah T. "Understanding the Conditions for Detecting a Phonology to Articulation Cascade in Speech Production." (2023) Diss., Rice University. https://hdl.handle.net/1911/115282.en_US
dc.identifier.urihttps://hdl.handle.net/1911/115282en_US
dc.language.isoengen_US
dc.rightsCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.en_US
dc.subjectcascading activationen_US
dc.subjectphonetic distortionsen_US
dc.titleUnderstanding the Conditions for Detecting a Phonology to Articulation Cascade in Speech Productionen_US
dc.typeThesisen_US
dc.type.materialTexten_US
thesis.degree.departmentPsychologyen_US
thesis.degree.disciplineSocial Sciencesen_US
thesis.degree.grantorRice Universityen_US
thesis.degree.levelDoctoralen_US
thesis.degree.nameDoctor of Philosophyen_US
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