Quantile Regression of Cognitive Ability and Achievement Inequality Before and After the Pandemic in One State.

J Intell · 2026 · PMC13027426 · PMID 41892878

Europe PMC DOI

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a clear trendno p-value reported

This suggests a clear trend of a weaker ability-achievement link across all distributions after COVID-19, with the largest gap among lower-achieving students.

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