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Area of Science:

  • Cognitive Development
  • Numerical Cognition

Background:

  • Number memory improves with age, potentially due to spatial-numeric associations.
  • Previous studies may have confounded memory span with numerical representation quality.

Purpose of the Study:

  • To investigate the link between spatial-numeric mapping and number memory in young children.
  • To control for memory span and other numerical abilities.

Main Methods:

  • Examined 39 preschoolers' recall of a single number (1-20) after a delay.
  • Assessed spatial-numeric mapping using number-line and give-a-number tasks.
  • Controlled for non-numeric memory and age.

Main Results:

  • Spatial-numeric mapping showed a logarithmic-to-linear shift.
  • Linearity in spatial-numeric mapping strongly correlated with number recall accuracy.
  • This correlation persisted even after controlling for age and non-numeric memory.

Conclusions:

  • Linear spatial-numeric mappings may enhance number memory beyond other numerical skills.
  • This finding supports the role of spatial representations in developing number memory.