Dominant Hand Shaped by Practice, Not Innate Wiring
TL;DR Summary
A PNAS study by Arac, Lee and Krakauer suggests limb dominance is driven by practice, not innate brain wiring. In an elbow-writing test, right-handed individuals showed no advantage with their right elbow; after training, both elbows improved, indicating dominance fades when using an unfamiliar body part and that long-term tool/handwriting use shapes motor preference.
- Your Dominant Hand Isn't Actually Hard-Wired, New Study Suggests ScienceAlert
- Your dominant hand may not be born-in: A study that taped people’s elbows shut found both sides quickly learned to write, hinting practice is what makes one hand better The Times of India
- Dominant hand excels through practice rather than brain advantage News-Medical
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