Learn · TED

Talk5 min

Why are some people left-handed?

Daniel M. Abrams · TED

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About

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. [Directed by TED-Ed, narrated by Addison Anderson, music by Michael Dow].

The talk

  1. Why are some people left-handed? 5 min · TED's player

Credits and licence

Institution
TED
Department
TED-Ed
Speaker
Daniel M. Abrams
Year
2015
Level
For everyone
Language
English
Subjects
Biology, Medicine and health, Engineering, Society and politics, History, Art, architecture and design
Source
TED
Licence
CC BY-NC-ND 4.0, as TED states it. Non-commercial use only, and no changed versions. TED's terms
Attribution
TED Talks are licensed by TED under Creative Commons BY-NC-ND 4.0 International and are shown here in TED's own player, as TED's usage policy asks.
Who can watch
TED gives no rating. Invisible Network shows it to Teens profiles and older, judged from what the source says about it. How courses are placed