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Related Experiment Videos

Conceptual knowledge increases infants' memory capacity.

Lisa Feigenson1, Justin Halberda

  • 1Department of Psychological and Brain Sciences, The Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218, USA. feigenson@jhu.edu

Proceedings of the National Academy of Sciences of the United States of America
|July 16, 2008
PubMed
Summary
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Infants can use conceptual knowledge to expand working memory, even without language or instruction. This demonstrates a fundamental memory strategy available from early development.

Area of Science:

  • Cognitive Psychology
  • Developmental Psychology
  • Neuroscience

Background:

  • Adults utilize conceptual knowledge to chunk information, expanding working memory capacity.
  • The origins of this chunking strategy, particularly in preverbal infants, remain largely unexplored.

Purpose of the Study:

  • To investigate whether untrained infants can employ conceptual knowledge to enhance their working memory.
  • To determine if memory expansion based on conceptual chunking is present before the development of explicit strategies.

Main Methods:

  • Four experiments were conducted with 14-month-old infants.
  • Infants' ability to track objects was assessed with and without various cues (perceptual, conceptual, linguistic, spatial).

Main Results:

Related Experiment Videos

  • In the absence of cues, infants demonstrated a working memory limit of three objects.
  • Infants surpassed this limit when provided with cues that facilitated parsing larger arrays into smaller, manageable units.

Conclusions:

  • Untrained, preverbal infants can use conceptual knowledge to expand working memory capacity.
  • This fundamental memory computation is available early in life, preceding explicit strategy development.