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Related Experiment Videos

Recognizing spoken words: the neighborhood activation model

P A Luce1, D B Pisoni

  • 1Department of Psychology and Center for Cognitive Science, University at Buffalo, New York, USA.

Ear and Hearing
|March 21, 1998
PubMed
Summary

The structure of word sound patterns in memory impacts spoken word recognition. A new model, the neighborhood activation model, explains how word similarity affects recognition speed and accuracy.

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Area of Science:

  • Cognitive Psychology
  • Computational Linguistics
  • Auditory Neuroscience

Background:

  • Human spoken word recognition relies on understanding the relationships between sound patterns of words stored in memory.
  • The mental lexicon's organization and the influence of these structures on recognition processes are key research questions.

Purpose of the Study:

  • To investigate the structural organization of spoken words in the mental lexicon.
  • To develop a computational and experimental framework for modeling spoken word recognition.

Main Methods:

  • Computed similarity neighborhoods for 20,000 words using phonetic transcriptions.
  • Analyzed neighborhood size, phonetic similarity, and word frequency.
  • Conducted behavioral experiments including perceptual identification, lexical decision, and word naming tasks.

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Main Results:

  • Word recognition speed and accuracy are significantly influenced by the number and characteristics of words within a similarity neighborhood.
  • A neighborhood probability rule was developed, accurately predicting identification performance by integrating intelligibility, confusability, and frequency.
  • Proposed the neighborhood activation model to explain how similarity structures affect auditory word recognition.

Conclusions:

  • The neighborhood activation model provides a robust explanation for the effects of similarity neighborhoods on spoken word recognition.
  • Findings have implications for understanding auditory word recognition in both typical and hearing-impaired individuals across different age groups.