10% Happier with Dan Harris The Science of Talking: Boost Your Mood, Sharpen Your Mind, and Protect Against Dementia | Maryellen MacDonald
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Apr 13, 2026 
Maryellen MacDonald, a cognitive scientist and psycholinguist at UW Madison, explores how talking, writing, and even self-talk can boost focus, learning, and emotional steadiness. She gets into why speaking is harder than listening, how conversation may help protect the brain as we age, why kids need more chances to speak, and why accent bias can hide real intelligence.
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Talking Does More Than Convey Information
- Talking has hidden benefits beyond communication because it focuses attention, clarifies thought, regulates emotion, and supports learning.
- Maryellen McDonald includes speaking, writing, signing, and inner speech in the same cognitive category.
Why Talking Is Harder Than Listening
- Talking is harder than listening because it requires building an internal plan and retrieving only the right words from long-term memory.
- McDonald says even a simple restaurant order means selecting a few target words from 50,000 to 100,000 possibilities.
Stop Finishing Other People's Sentences
- Avoid finishing other people's sentences because listeners occupy the easier role and can deny speakers the cognitive benefits of talking.
- McDonald notes people often speed up podcasts because listening outruns speech, which helps explain the urge to interrupt.
