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Exploring individual differences in native phonetic perception and their link to nonnative phonetic perception.

Claire T Honda1, Meghan Clayards2, Shari R Baum2

  • 1Integrated Program in Neuroscience, McGill University.

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Individual differences in adult phoneme perception vary. Shallow native phoneme perception on two-alternative forced choice (2AFC) tasks correlates with inconsistent visual analog scaling (VAS) responses, suggesting consistent native perception aids nonnative learning.

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Area of Science:

  • Psycholinguistics
  • Speech Perception
  • Cognitive Neuroscience

Background:

  • Adults exhibit significant variability in perceiving native and nonnative speech sounds.
  • Individual differences in phonetic perception, including learning unfamiliar sounds, are not well understood.
  • The relationship between different perceptual tasks (e.g., two-alternative forced choice vs. visual analog scaling) and individual differences remains unclear.

Purpose of the Study:

  • To investigate the relationship between individual differences in native and nonnative phonetic perception.
  • To examine how performance on two-alternative forced choice (2AFC) and visual analog scaling (VAS) tasks relate to individual differences.
  • To determine if consistent native perception influences the ability to perceive nonnative phonemes.

Main Methods:

  • Two experiments were conducted to assess individual differences in phonetic perception.
  • Participants completed 2AFC and VAS tasks using native and nonnative phoneme continua.
  • Analysis focused on identification slopes and response consistency across tasks.

Main Results:

  • Shallow 2AFC identification slopes for native phonemes were not associated with shallow VAS slopes.
  • Shallow 2AFC slopes were, however, linked to inconsistent responses on the VAS task.
  • Consistent perception of native phonemes appeared to facilitate nonnative phoneme perception.

Conclusions:

  • Task-specific differences exist in measuring individual phonetic perception variability.
  • Consistent native speech sound perception may be a crucial factor for successful nonnative sound acquisition.
  • Findings enhance understanding of individual differences in phonetic perception and inform language learning strategies.