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Related Experiment Video

Updated: Dec 12, 2025

Author Spotlight: Investigating the Impact of Emotional Prosodies on Voice Recognition and Perception
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The Reliability of Individual Differences in VOT Imitation.

Lacey Wade1, Wei Lai1, Meredith Tamminga1

  • 1University of Pennsylvania, USA.

Language and Speech
|August 11, 2020
PubMed
Summary

Individual differences in phonetic imitation are stable over time. People consistently imitate speech patterns, whether they move closer to or further from a model talker, showing reliable individual phonetic behaviors.

Keywords:
Phonetic imitationindividual differencesshadowingtest–retest reliability

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Area of Science:

  • Phonetics
  • Sociolinguistics
  • Psycholinguistics

Background:

  • Recent research indicates individual variations in phonetic behaviors beyond typical social factors.
  • The stability of these individual phonetic differences over time remains largely unexplored.

Purpose of the Study:

  • To investigate the individual-level stability of phonetic imitation.
  • To determine if observed deviations from phonetic norms are consistent characteristics of individuals.

Main Methods:

  • A test-retest design was employed using a lexical shadowing task.
  • Participants imitated a model talker's artificially-lengthened voice-onset time (VOT).
  • The same participants performed the task on two separate occasions.

Main Results:

  • Individual imitation patterns (convergence or divergence in VOT) showed high correlation across test-retest sessions.
  • A strong correlation was found between individual VOT shifts towards male and female model talkers.
  • Phonetic imitation stability was confirmed at the individual level.

Conclusions:

  • Individual differences in phonetic behavior, particularly imitation, are stable characteristics.
  • Averaging group data can obscure the complexity and individuality of phonetic processes.
  • Individual phonetic variability warrants further investigation.