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| Name | Why are some people left-handed? - Daniel M. Abrams |
| Video Uploader | Video From TED-Ed |
| Upload Date | This Video Uploaded At 03-02-2015 16:20:34 |
| Video Discription | View full lesson: http://ed.ted.com/lessons/why-are-some-people-left-handed-daniel-m-abrams Today, about one-tenth of the world’s population are southpaws. Why are such a small proportion of people left-handed -- and why does the trait exist in the first place? Daniel M. Abrams investigates how the uneven ratio of lefties and righties gives insight into a balance between competitive and cooperative pressures on human evolution. Lesson by Daniel M. Abrams, animation by TED-Ed. |
| Category | Education |
| Tags | TED | TED-Ed | TEDx | Left-hand | Left-handed | Proper hand | Right-hand | Right-handed | Identical twins | Handedness | Parents | Genetics | Competitive pressures | Cooperative pressures | Sports | Fighting hypothesis | Negative frequency-dependent selection | Evolution | Evolutionary advantage | Baseball | Switch hitter | Golf | Right-handed world | Equilibrium |
