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When half a word is enough: infants can recognize spoken words using partial phonetic information.

A Fernald1, D Swingley, J P Pinto

  • 1Department of Psychology, Stanford University, CA 94305, USA. fernald@psych.stanford.edu

Child Development
|August 2, 2001
PubMed
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Infants in their second year can process spoken words using initial sounds, similar to adults. This early speech processing ability improves with vocabulary growth, enhancing comprehension speed and accuracy.

Area of Science:

  • Developmental Psychology
  • Linguistics
  • Cognitive Science

Background:

  • Adults exhibit incremental speech processing, utilizing early phonetic cues for word recognition.
  • Understanding the developmental trajectory of this ability in infants is crucial for early language acquisition research.

Purpose of the Study:

  • To investigate whether infants in their second year utilize word-initial phonetic information for spoken word recognition.
  • To examine the time course of spoken word comprehension in infants.
  • To explore the relationship between infants' spoken word recognition efficiency and their lexical development.

Main Methods:

  • Tracking infant eye movements while they viewed pictures in response to familiar spoken words.
  • Presenting words in both intact (whole word) and partial (first 300 ms) forms.

Related Experiment Videos

  • Replicating experiments with 18-month-old and 21-month-old infants.

    • Main Results:

    • Infants recognized partial words as efficiently as whole words, indicating reliance on initial phonetic information.
    • Infants with larger productive vocabularies demonstrated greater accuracy in word recognition.
    • Faster reaction times in word recognition correlated with larger vocabularies and higher accuracy.

    Conclusions:

    • Infants in the second year are capable of incremental speech processing prior to the vocabulary spurt.
    • Lexical growth is associated with enhanced speed and efficiency in spoken language comprehension during infancy.