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Reprogramming phonologically similar utterances: the role of phonetic features in pre-motor encoding
1Department of Speech and Hearing Sciences, University of Washington, Seattle 98105-6246, USA.
Summary
Phonological similarity, particularly shared manner, slows speech production by affecting pre-motor planning, not articulatory constraints. This suggests words are assembled from smaller units during speech encoding.
Area of Science:
- Psycholinguistics
- Speech Production
- Phonetics
Background:
- Investigating speech production involves understanding pre-motor planning stages.
- Phonological similarity's impact on speech production latencies is not fully understood.
- Articulatory features and reprogramming operations are key elements in speech production.
Purpose of the Study:
- To explore the role of articulatory phonetic features and reprogramming in pre-motor speech production.
- To determine the influence of phonological similarity on speech production latencies.
- To investigate the units of representation and processes in pre-motor planning.
Main Methods:
- Utilized a form-based priming technique across five experiments.
- Elicited rapid productions of single words using visually presented word pairs.
- Manipulated stimulus set size, interstimulus interval, and feedback.
Main Results:
- Shared manner of articulation was the most significant factor in inhibitory phonological similarity effects.
- Smaller stimulus sets (6 words) resulted in slower response latencies compared to larger sets (18 words).
- Findings suggest inhibitory effects stem from pre-motor planning, not articulatory constraints.
Conclusions:
- Inhibitory phonological similarity effects are linked to pre-motor planning, not biomechanical limitations.
- Word form retrieval involves assembling sublexical units, not retrieving whole words.
- The experimental paradigm can investigate pre-motor planning in speech disorders.