The Development of Relational Reasoning in South Korean Elementary and Middle-School Students: A Cross-Sectional Investigation.

Front Psychol · 2021 · PMC7970051 · PMID 33746850

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marginally significantno p-value reported

There was a marginally significant development in analogy and a significant development in antinomy and antithesis from grades 6 to 8.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.