Numerical cognition in speakers of an Amazonian language with exactly twenty number words.

Psychol Res · 2026 · PMC13128774 · PMID 42053677

Europe PMC DOI

hedged sentences

0.0780

closest p · 1.6× alpha

0.2090

boldest claim

The sentences

did not reach statistical significancep = 0.078so close (0.05 < p ≤ 0.1)

Reaction time The average reaction times (in ms) for Awetý speaking participants ( M Awetý = 1517, SD Awetý = 585) were observed to be longer than those of Brazilian Portuguese speakers ( M Brazilian Portuguese = 1171, SD Brazilian Portuguese = 281), although this disparity did not reach statistical significance, F (1, 22) = 3.412, p = 0.078, ηp2 = 0.134.

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failed to reach significancep = 0.209not close (p > 0.1)

While the mean Weber fraction in the Brazilian Portuguese group was lower, this difference failed to reach significance, t (22) = 1.294, p = 0.209, Cohen’s d = 0.097.

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