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Lexical stress representation in spoken word recognition.

Angeliki Andrikopoulou1, Athanassios Protopapas2, Amalia Arvaniti3

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Summary

This study investigated how word stress is represented in the brain. Findings suggest that stress patterns are not underspecified, challenging the default metrics assumption in speech perception.

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Area of Science:

  • Psycholinguistics
  • Phonetics
  • Cognitive Science

Background:

  • The representation of word stress in the lexicon is debated.
  • One model, the "default metrics" assumption, posits stress is only specified for non-default patterns.
  • An alternative view is that stress is fully specified for all words.

Purpose of the Study:

  • To test the "default metrics" assumption against full lexical specification of stress.
  • To investigate the perceptual domain of stress representation using behavioral and eye-tracking data.
  • To examine stress processing in the Greek language.

Main Methods:

  • Cross-modal fragment priming in a lexical-decision task.
  • Visual world eye-tracking experiments.
  • Utilized Greek word pairs with varying stress patterns (penultimate, antepenultimate, final).

Main Results:

  • No evidence supported the "default metrics" assumption.
  • Behavioral and eye-tracking data did not align with predictions of underspecified stress.
  • The predicted asymmetric inhibition pattern was not observed.

Conclusions:

  • The "default metrics" assumption regarding lexical stress representation was not supported.
  • Findings suggest that stress may be fully specified in the lexicon for all words.
  • Alternative conceptualizations of stress representation in speech perception are warranted.