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Linguistic and cognitive abilities in infancy: when does language become a tool for categorization?

T Nazzi1, A Gopnik

  • 1Laboraroite Cognition et Développement, Centre Universitaire de Boulogne, Institut de Psychologie - Université Paris 5, 71, Avenue Edouard Vaillant, 92774 Boulogne Billancourt, Cedex, France. thierry.nazzi@psycho.univ-paris5.fr

Cognition
|March 29, 2001
PubMed
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Young infants can learn object categories from pictures. Older infants (20 months) also use names to categorize objects, linking this skill to their growing vocabulary.

Area of Science:

  • Developmental Psychology
  • Cognitive Science
  • Linguistics

Background:

  • Infants develop categorization skills to understand the world.
  • Early categorization relies on perceptual cues like vision.
  • The role of linguistic information in infant categorization is less understood.

Purpose of the Study:

  • To investigate infants' ability to form object categories using visual versus naming information.
  • To examine age-related differences in categorization strategies at 16 and 20 months.
  • To explore the relationship between vocabulary size and name-based categorization.

Main Methods:

  • An object manipulation task was used to assess categorization abilities.
  • Infants were tested at 16 and 20 months of age.

Related Experiment Videos

  • Productive vocabulary size was measured for each infant.

    • Main Results:

    • Infants at both 16 and 20 months used visual information for categorization.
    • Only 20-month-old infants demonstrated the ability to use naming information for categorization.
    • A significant correlation was found between vocabulary size and name-based categorization in 20-month-olds.

    Conclusions:

    • Infants as young as 20 months can utilize naming as a cue for object categorization.
    • This ability appears linked to lexical development and vocabulary expansion.
    • Findings suggest a developmental shift in how infants integrate linguistic and visual information for learning.