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Cascading activation in phonological planning and articulation: Evidence from spontaneous speech errors
John Alderete1, Melissa Baese-Berk2, Keith Leung1
1Simon Fraser University, Burnaby, Canada.
Cognition
|February 20, 2021
Summary
Phonetic distortions in speech errors occur in natural conversations, not just lab settings. This supports models where multiple sound plans influence articulation during spontaneous speech.
Area of Science:
- Phonetics
- Psycholinguistics
- Speech Production
Background:
- Speaking requires phonological planning and articulation.
- Previous research suggested candidate sounds influence articulation, but only in lab-induced errors.
Purpose of the Study:
- To investigate phonetic distortions in spontaneous speech errors.
- To compare spontaneous errors with experimentally-elicited errors.
Main Methods:
- Analyzed pronunciation of speech errors in natural conversations.
- Compared error sounds with matched correct words from the same speakers.
- Compared findings with existing data on experimentally-elicited errors.
Main Results:
- Phonetic distortions, where errors are skewed towards unselected sounds, were found in spontaneous speech.
- No significant differences were observed between spontaneous and experimentally-elicited speech errors.
Conclusions:
- Findings provide ecologically-valid support for models of speech production.
- These models allow multiple phonological representations to influence articulation simultaneously.
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