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The articulatory determinants of verbal sequence learning
Amanda Sjöblom1, Robert W Hughes1
1Department of Psychology, Royal Holloway, University of London.
Summary
Verbal sequence learning relies on active planning of articulation, not just passive phonological storage. This study shows articulatory suppression hinders learning, while phonological similarity effects depend on articulatory planning.
Area of Science:
- Cognitive Psychology
- Neuroscience
- Linguistics
Background:
- The Hebb repetition effect demonstrates enhanced recall for repeated sequences.
- Previous models emphasized phonological store in verbal sequence learning.
- The role of active articulatory planning in learning remained debated.
Purpose of the Study:
- To investigate the role of active articulatory-planning processes in verbal sequence learning.
- To challenge phonological-store based models of sequence learning.
- To explore the contribution of perceptual organization independent of articulation.
Main Methods:
- Two experiments (N=154) utilized the Hebb repetition effect.
- Articulatory suppression was used to restrict planning.
- Auditory and visual sequences were employed to differentiate processes.
- Temporal grouping effects were examined under varying articulatory conditions.
Main Results:
- Articulatory suppression attenuated Hebb sequence learning, especially for visual sequences.
- Auditory sequences showed less attenuation, suggesting independent perceptual contributions.
- Phonological similarity effects on learning were dependent on articulatory planning.
- Inconsistent temporal grouping abolished learning when integrated into an articulatory plan.
Conclusions:
- Verbal sequence learning is significantly influenced by active articulatory-planning processes.
- Passive perceptual organization contributes to auditory sequence learning.
- Findings challenge phonological-store based models, supporting a role for general articulatory and perceptual mechanisms in verbal sequence learning and short-term memory.
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