Related Experiment Video
Updated: Feb 28, 2026
06:35
Examining Recall Memory in Infancy and Early Childhood Using the Elicited Imitation Paradigm
Published on: April 28, 2016
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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
Summary
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.
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