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Verbal and spatial working memory in school-age children: developmental differences in susceptibility to interference
1Department of Psychology, Washington University, St. Louis, Missouri 63130, USA. sshale@artsci.wustl.edu
Developmental Psychology
|March 1, 1997
Summary
This study on verbal and spatial working memory found that while all children experienced domain-specific interference, only younger children showed non-specific interference, indicating developing executive functions.
Area of Science:
- Cognitive Psychology
- Developmental Psychology
- Neuroscience
Background:
- Working memory is crucial for cognitive development.
- Understanding the development of verbal and spatial working memory is essential.
- Interference paradigms help elucidate memory system limitations.
Purpose of the Study:
- To investigate the developmental trajectory of verbal and spatial working memory.
- To examine domain-specific and non-specific interference effects across age groups.
- To assess the maturation of executive functions related to working memory.
Main Methods:
- Employed an interference paradigm with verbal and spatial primary memory tasks.
- Administered tasks to three age groups: 8-year-olds, 10-year-olds, and 19-year-olds.
- Varied secondary tasks to induce domain-specific and non-specific interference.
Main Results:
- All age groups exhibited domain-specific interference in working memory tasks.
- Only 8-year-olds demonstrated non-specific interference, impacting both memory domains.
- This suggests that executive functions mature gradually, reaching adult efficiency later.
Conclusions:
- Working memory development involves distinct maturation of domain-specific and general executive functions.
- Non-specific interference observed in younger children highlights ongoing development of executive control.
- Adult-level executive function efficiency in working memory appears to be established around age 10.