Arm dominance is an emergent effect of practice executing complex trajectory shapes required by tools and objects.

Proc Natl Acad Sci U S A · 2026 · PMC13335845 · PMID 42378273

Europe PMC DOI

hedged sentence

0.0000

closest p · 0.0× alpha

0.0000

boldest claim

The sentences

highly significantP = 1.55 × 10 −7actually significant

Accordingly, the Side × Effector interaction remained highly significant ( P = 1.55 × 10 −7 ), confirming that the nondominant disadvantage persisted after statistically controlling for execution time.

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