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Relationship between individual differences in speech processing and cognitive functions.

Jinghua Ou1, Sam-Po Law2, Roxana Fung3

  • 1Division of Speech and Hearing Science, the University of Hong Kong, Pokfulam, Hong Kong SAR.

Psychonomic Bulletin & Review
|April 29, 2015
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Summary
This summary is machine-generated.

Cognitive abilities like attention and working memory influence how individuals process speech, even during language change. These skills impact both understanding and producing sounds, affecting speech perception and production.

Keywords:
Attentional switchingIndividual differencesInhibitory controlSpeech perceptionSpeech productionWorking memory

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Area of Science:

  • Psycholinguistics
  • Cognitive Neuroscience
  • Sociolinguistics

Background:

  • Individual differences in speech processing are increasingly linked to cognitive abilities.
  • Sound change, such as tone merging in Cantonese, offers a natural experiment to study these links.
  • Understanding these relationships can shed light on language evolution.

Purpose of the Study:

  • To investigate the relationship between cognitive functions (attention, working memory) and speech processing variations.
  • To examine these relationships across auditory and visual modalities in Cantonese speakers undergoing sound change.
  • To explore how cognitive abilities relate to perception and production in a specific linguistic context.

Main Methods:

  • Recruited three groups of typically developed Cantonese speakers based on speech perception and production abilities.
  • Assessed attentional switching/control and working memory across auditory and visual domains.
  • Analyzed speech perception, production, and discrimination latencies in relation to cognitive measures.

Main Results:

  • Modality-independent attentional control and working memory significantly correlate with individual differences in speech processing.
  • Cognitive abilities influence patterns of speech perception and production.
  • Variations in cognitive functions are associated with differences in speech discrimination latencies.

Conclusions:

  • Attentional and working memory capacities are crucial for individual speech processing, irrespective of sensory modality.
  • These cognitive factors play a role in how individuals adapt to or are affected by ongoing language change.
  • The findings have implications for understanding speech processing and language evolution across diverse linguistic contexts.