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229 Brazilian first-grade students participated in a study assessing the selective impact of math anxiety on symbolic versus nonsymbolic mathematical skills. The dataset, authored by Angélica Polvani Trassi and last updated in April 2026, contains supplementary material for the research paper. It includes results from assessments of math anxiety, mathematical skills, nonverbal reasoning, and language abilities.
License is CC-BY-4.0. The data is contained within a DOCX file, which may require specific tools for access.