Children's understanding of whole number advances by one developmental level per additional unit of working memory capacity¶

Claim · All claims
Evidence · 1 study · associational r2 · q3
Currency · newest study 2019 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i? In Study I, whole-number conceptual understanding advanced by one developmental level for each additional unit of working memory capacity. → Morra 2019

Evidence¶

Morra 2019¶

Morra, S.; Bisagno, E.; Caviola, S.; Delfante, C.; Mammarella, I. C. (2019). Working Memory Capacity and the Development of Quantitative Central Conceptual Structures. Cognition and Instruction. https://doi.org/10.1080/07370008.2019.1636797

q3 · i? · associational · r2

Study I, a cross-sectional validation study of 779 children from preschool to grade 5, validated a measure of the whole number CCS. The article reports that "children's understanding of whole number advances by one developmental level per additional unit of working memory capacity." No effect size is printed.

"Study I, with 779 children from preschool to grade 5, validated a measure of the whole number CCS and found that children's understanding of whole number advances by one developmental level per additional unit of working memory capacity."

Discussion¶

Learner Variables¶

• Working Memory — predictor: learners who differ on it differ in outcomes

Related Claims¶

• Two subsets of rational-number CCS items demand working memory capacities of 4 or 5 units respectively — related
• Working memory capacity increases with age independently of knowledge, encoding speed, and articulation — related
• Chunking reduces working memory load by grouping information into fewer, more meaningful units. — related
• Rational-number CCS test performance is predicted by working memory capacity and, to a lesser extent, by intrusion errors in the listening span — related
• In a cross-sectional model, attention problems relate to both non-verbal and verbal math performance only indirectly, through working memory (and, for MR, reading) — related