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Related Experiment Videos

Coherence in children's speech perception.

S Nittrouer1, C S Crowther

  • 1Boys Town National Research Hospital, Omaha, Nebraska 68131, USA.

The Journal of the Acoustical Society of America
|October 30, 2001
PubMed
Summary
This summary is machine-generated.

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Children

Area of Science:

  • Psycholinguistics
  • Developmental Psychology
  • Auditory Perception

Background:

  • Acoustic cues in speech perception typically cohere, aiding discrimination.
  • Previous research indicates adults cannot distinguish stimuli if cues conflict equally.
  • The existence of this perceptual coherence in children is not well understood.

Purpose of the Study:

  • To investigate perceptual coherence in children's speech perception.
  • To determine if children exhibit similar cue weighting to adults.
  • To examine how children process conflicting acoustic cues in speech signals.

Main Methods:

  • Experiment 1: Assessed cue weighting (F2-onset frequency, gap duration) for "spa" vs. "sa" in adults and children (5- and 7-year-olds).
  • Experiment 2: Employed an AX paradigm for same/different judgments with conflicting or congruent acoustic cues.

Related Experiment Videos

  • Utilized stimuli designed to bias phonetic perception towards same or different categories.

    • Main Results:

    • Adults could discriminate stimuli even with conflicting cues, contradicting prior studies.
    • 7-year-olds' results partially replicated adults', showing weaker coherence.
    • 5-year-olds demonstrated perceptual coherence similar to previous adult findings.
    • Listeners appear to learn to overcome perceptual coherence under specific conditions.

    Conclusions:

    • Speech signal perceptual coherence is present from early childhood.
    • Listeners develop the ability to overcome perceptual coherence with age and experience.
    • This suggests a developmental trajectory in how acoustic cue conflicts are managed in speech perception.