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Lexical and sublexical feedback in auditory word recognition

M A Pitt1, A G Samuel

  • 1Ohio State University, USA.

Cognitive Psychology
|October 1, 1995
PubMed
Summary

Interactive models of spoken language understanding are supported by new research. This study found that lexical effects occur early, suggesting sublexical processes also play a key role in word recognition.

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Area of Science:

  • Psycholinguistics
  • Cognitive Science
  • Speech Processing

Background:

  • Spoken language understanding involves two main models: autonomous (bottom-up) and interactive (top-down and bottom-up).
  • Distinguishing between these models is crucial for understanding lexical access.

Purpose of the Study:

  • To test predictions differentiating autonomous and interactive spoken language understanding models.
  • To investigate the role of lexical and sublexical processes in word recognition.

Main Methods:

  • Phoneme monitoring tasks were used to assess lexical advantage for real words versus pseudowords.
  • Speech compression and expansion techniques evaluated the necessity of bottom-up evidence and processing time for lexical access.

Main Results:

  • A lexical advantage was observed for real words over pseudowords, even before full word recognition, supporting interactive models.
  • Evidence suggests that sublexical activation is important alongside lexical effects in spoken word recognition.

Conclusions:

  • The findings support interactive models of spoken language understanding.
  • The study highlights the necessity of incorporating sublexical processes into current models of lexical access.

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