Romanian Journal of Applied Psychology 2025, Volume 27, Issue 1, 73-83 11 Pages Posted: 12 Jan 2026 Dilla University Addis Ababa University Date Written: September 10, 2025 This review aimed to evaluate the effectiveness of interventions for children with developmental dyscalculia (DD). The PsycINFO, ERIC, PubMed, Scopus, Science direct, Google scholar, and Google databases and search engines were searched. Studies employed experimental and quasiexperimental designs were reviewed. Thirty three studies with 1792 children aged 6-12 years were chosen. A large pooled effect size was found (Hedge's g = .93; 95% CI .38, 3.09). There was no statistically significant moderator variable predicting the pooled effect size. Finally, publication bias was found, as shown by Egger's regression test analysis. Overall, interventions have generally large effect in improving the numerical skills of children with DD. Keywords: Developmental dyscalculia, Intervention effectiveness, children, systematic review, meta-analysis Suggested Citation: Suggested Citation Developmental Psychology eJournal Subscribe to this fee journal for more curated articles on this topic
Mehari et al. (Thu,) studied this question.