A novel working memory task for preschoolers: sensitivity to age differences from 3-5 years

Area of Science:

• Cognitive Development
• Developmental Psychology
• Neuroscience

Background:

• Working memory (WM) is vital for children's learning and future success.
• Early WM development offers insights into executive functions across the lifespan.
• Understanding WM components like retrieval, substitution, and transformation is key.

Purpose of the Study:

• To examine age-related changes in three WM components in preschoolers.
• To assess a novel preschool WM measure for sensitivity to developmental differences.
• To test the hierarchical model of WM development using error analysis.

Main Methods:

• A novel working memory task was administered to 64 children aged 3.0 to 5.6 years.
• Age differences in WM component development (retrieval, substitution, transformation) were analyzed.
• Perseverative and non-perseverative WM errors were examined in relation to the hierarchical model.

Main Results:

• The WM task demonstrated sensitivity to age differences between 3 and 5 years.
• Findings support the hierarchical model of working memory development.
• Specific error types were associated with distinct WM component difficulties.

Conclusions:

• Preschool-aged children show significant development in working memory components.
• The hierarchical model of WM development is supported by findings in early childhood.
• This research provides a foundation for understanding executive function development.