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Mechanisms of aural encoding: VIII. Phonetic interference and context-sensitive coding in short-term memory.

B D Sales¹, R A Cole, R N Haber

¹University of Nebraska, 68503, Lincoln, Nebraska.

Memory & Cognition

|January 29, 2011

Summary

Short-term memory for speech sounds is influenced by articulation. Vowels affect consonant recall, suggesting phonetic coding in memory.

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Area of Science:

Psycholinguistics
Cognitive Psychology
Speech Perception

Background:

Previous studies indicated consonant phonemes are not recalled based on place of articulation.
Phonetic interference effects in short-term memory recall were investigated.

Purpose of the Study:

To examine phonetic interference in consonant-vowel (CV) and vowel-consonant (VC) sequences.
To determine if vowels influence consonant recall based on articulatory features.

Main Methods:

Participants recalled sequences of CV or VC syllables with varying consonant articulation.
Consonants were paired with different vowels to assess phonetic interference.
Recall performance was compared across sequences differing in manner and place of articulation.

Main Results:

Phonetic interference was observed for the middle consonant in both manner and place of articulation sequences.
This interference effect occurred in both consonant-vowel (CV) and vowel-consonant (VC) groups.
The results suggest vowels are encoded by place of articulation in short-term memory.

Conclusions:

Vowels play a role in short-term memory encoding of consonants.
Articulatory features, specifically place of articulation for vowels, influence phonetic recall.
This indicates a more complex phonetic coding in short-term memory than previously thought.