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Updated: Feb 28, 2026

Examining Recall Memory in Infancy and Early Childhood Using the Elicited Imitation Paradigm
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Examining Recall Memory in Infancy and Early Childhood Using the Elicited Imitation Paradigm

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Nap-dependent declarative memory consolidation in 12-month-old infants - A conceptual replication study

C Konrad1, S Schneider2, K Zinke3

  • 1Developmental Psychology, Faculty of Psychology, Ruhr University, Bochum, Germany.

Infant Behavior & Development
|February 26, 2026
PubMed

Insights

Infant naps are crucial for consolidating declarative memories. This study shows that 12-month-olds who napped after learning a new skill could recall it later, unlike those who stayed awake.

Area of Science:

  • Developmental Psychology
  • Cognitive Neuroscience
  • Sleep Science

Background:

  • Declarative memory consolidation is vital for learning.
  • Previous research suggests sleep aids memory consolidation in adults.
  • The role of sleep in infant memory consolidation requires further investigation.

Purpose of the Study:

  • To replicate and extend findings on sleep-dependent declarative memory consolidation in 12-month-old infants.
  • To investigate the impact of post-learning sleep on infant memory recall.
  • To determine if naps facilitate the consolidation of newly acquired declarative memories in infants.

Main Methods:

  • Fifty-one 12-month-old infants were assigned to nap, wake, or control groups.
  • Declarative memory was assessed using deferred imitation paradigms.
  • Post-encoding sleep was monitored using polysomnography in the nap group.

Main Results:

  • Only infants who took a nap after learning demonstrated retention of target actions.
  • The average nap duration was 67 minutes.
  • A significant delay of 149 minutes occurred between learning and testing.

Conclusions:

  • Post-learning naps are critical for declarative memory consolidation in infants.
  • This sleep-dependent consolidation effect extends to various learning materials.
  • Findings underscore the importance of sleep for cognitive development in early childhood.

Keywords:
ImitationInfancyMemory consolidationNappingSleep

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