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Visible Learning™
Visible Learning MetaX
Version 1.4 – Updated February 2026

Working memory strength

Overview

  • Influence: Working memory strength
  • Domain: Student
  • Sub-Domain: Prior knowledge and background
  • Potential to Accelerate Student Achievement: Potential to considerably accelerate
  • Influence Definition: Working memory relates to how much information a student can hold and manipulate temporarily. Students with low levels of working memory tend to perform worse academically

Evidence

  • Number of meta-analyses: 6
  • Number of studies: 536
  • Number of students: 56,538
  • Number of effects: 4,372
  • Weighted mean effect size: 0.64
  • Robustness index: 5

Meta-Analyses

Meta-Analyses
Journal Title Author Article Name Year Published Variable Number of Studies Number of Students Number of Effects Effect Size
Journal of Educational Psychology Peng, Namkung, Barnes, & Sun A meta-analysis of mathematics and working memory: Moderating effects of working memory domain, type of mathematics skill, and sample characteristics. 2016 Working memory on math achievement 110 NA 829 0.61
Psychological Bulletin Peng, Barnes, Wang, Li, Swanson, Dardick, & Tao A meta-analysis on the relation between reading and working memory 2018 Working memory on reading 197 29,629 2,026 0.61
Educational Research Review Friso-van den Bos, van der Ven, Kroesbergen, & van Luit Working memory and mathematics in primary school children: A meta-analysis 2013 Working memory on achievement 111 16,921 1,233 0.70
Learning and Individual Differences Carretti, Borella, Cornoldi & de Beni Role of working memory in explaining the performance of individuals with specific reading comprehension difficulties: A meta-analysis 2009 Working memory on reading achievement 19 1,613 19 0.71
Applied Psycholinguistics Shin meta-analysis of the relationship between working memory and second language reading comprehension: Does task type matter?.  2020 Working memory second language learning 25 2,682 37 0.63
Studies in Second Language Acquisition Hijkata & Koizumi Working memory capacity and L2 reading: A meta-analysis.  2022 Working memory and L2 Reading 74 5,693 228 0.63
TOTAL/AVERAGE 536 56,538 4,372 0.65
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