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Updated: Jun 17, 2025

Foreign Accent and Forensic Speaker Identification in Voice Lineups: The Influence of Acoustic Features Based on Prosody
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The Case for a Quantitative Approach to the Study of Nonnative Accent Features.

Mónica Anna Wagner1, Mirjam Broersma2, James M McQueen3

  • 1Donders Centre for Cognition, Donders Institute for Brain, Cognition, and Behaviour, Radboud Universiteit, The Netherlands.

Language and Speech
|August 7, 2024
PubMed
Summary

This study introduces a quantitative method to analyze nonnative accent features, like Dutch-accented English. It reveals which phonetic features distinguish nonnative from native speakers and uncovers new accent characteristics.

Keywords:
Dutch-accented EnglishForeign accentaccent featuresdata-driven approacheshierarchy of errors

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Area of Science:

  • Phonetics and Phonology
  • Sociolinguistics
  • Second Language Acquisition

Background:

  • Limited empirical data exists on the prevalence of specific nonnative accent features among native and nonnative speakers.
  • Existing research often focuses on a few well-known features, potentially overlooking less common or newly emerging ones.
  • Generalizability of findings from well-known features to lesser-known ones remains uncertain.

Purpose of the Study:

  • To develop and demonstrate a quantitative approach for analyzing nonnative accent features.
  • To identify phonetic features that effectively differentiate nonnative from native speech.
  • To investigate the prevalence of accent features and regional variability in Dutch-accented English.

Main Methods:

  • Analysis of phonetic distances between speech transcriptions to identify distinguishing features.
  • Hypothesis testing on accent features by comparing their prevalence in native versus nonnative speakers.
  • Inclusion of diverse native English (US, UK) and Dutch (Belgium, Netherlands) speakers to account for regional variations.

Main Results:

  • Empirical support was found for some established Dutch-accented English features.
  • Certain assumed nonnative features were found to be infrequent among nonnatives or common among natives.
  • New potential accent features were identified, alongside factors influencing the expression of known features.

Conclusions:

  • The quantitative approach effectively identifies and analyzes nonnative accent features.
  • Findings validate some known features while challenging others, highlighting the need for empirical data.
  • The study expands the understanding of accent phenomena by revealing novel features and modulating factors.