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The distribution of speech errors in multi-word prosodic units.
Laboratory Phonology
|June 19, 2012
Summary
Speech errors reveal how the brain plans spoken language. This study found that sequencing errors increase within speech units, suggesting a pattern of activation and decay during planning.
Area of Science:
- Psycholinguistics
- Speech Production
- Phonological Encoding
Background:
- Speech errors provide insights into phonological encoding and serial ordering in speech.
- Understanding speech planning requires examining error distribution within prosodic units.
Purpose of the Study:
- To investigate the relevance of multi-word prosodic units to speech planning.
- To determine how sequential speech errors are distributed within these units.
Main Methods:
- Analyzing sequencing errors in elicited speech from 40 English speakers producing varied sentences.
- Identifying and categorizing speech errors and prosodic boundaries in recorded utterances.
- Examining error patterns in relation to prosodic unit boundaries and positions.
Main Results:
- Speech error patterns strongly correlated with prosodic unit boundaries.
- A 'cumulative error pattern' showed increasing errors from unit-initial to late-mid positions.
- A 'final position effect' indicated disproportionate errors in the final position of units, with exceptions in utterance-final units.
Conclusions:
- Findings suggest multi-word prosodic units are relevant to speech planning.
- The cumulative error and final position effects support models of serial activation and decay in planning domains.
- Prosodic structure plays a crucial role in the temporal organization of speech production.
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