Featured Research

from universities, journals, and other organizations

The Evolution Of Right- And Left-handedness

Date:
March 1, 2006
Source:
University of Chicago Press Journals
Summary:
A study from the April issue of Current Anthropology explores the evolution of handedness, one of few firm behavioral boundaries separating humans from other animals. As researchers find new cultural behaviors among chimpanzees and other primates, language is the only other characteristic accepted to be unique to humans, and both language and handedness appear to relate to the separation of functions between the two halves of the human brain, also known as lateralization.

A study from the April issue of Current Anthropology explores the evolution of handedness, one of few firm behavioral boundaries separating humans from other animals. As researchers find new cultural behaviors among chimpanzees and other primates, language is the only other characteristic accepted to be unique to humans, and both language and handedness appear to relate to the separation of functions between the two halves of the human brain, also known as lateralization.

Related Articles


"The predominant right-handedness of humans has been noted since at least the time of the Greek philosophers Plato and Aristotle," write Amanda Blackburn (University of Manitoba) and Christopher Kn�sel (University of Bradford). "Modern research has shown that hand preference occurs across human cultures and, through observations of ancient art, in ancient peoples."

The researchers compared two test groups � a modern sample of Canadians and a sample of medieval English villagers � to determine the effect repeated movement had on human skeletons separated by over a thousand years. They found that the majority of active individuals display a high degree of asymmetry.

"We studied two groups, one a modern group of Canadians, for whom we could document hand preference and physical activity histories, as well as the breadth of the part of the humerus that makes up the elbow joint," explain the authors. "We then applied the same measurement to a group of medieval English villagers known to us only through their skeletons. This allowed us to demonstrate the usefulness of this trait to determine changes in hand preference in populations separated in time by over a thousand years."

###

Sponsored by the Wenner-Gren Foundation for Anthropological Research, Current Anthropology is a highly respected transnational journal devoted to research on humankind, encompassing the full range of anthropological scholarship on human cultures and on the human and other primate species. Communicating across the subfields, the journal features papers in a wide variety of areas, including social, cultural, and physical anthropology as well as ethnology and ethnohistory, archaeology and prehistory, folklore, and linguistics. For more information, please see our Web site: www.journals.uchicago.edu/CA.

Blackburn, Amanda, and Christopher Kn�sel. "Bilateral Asymmetry of the Epicondylar Breadth of the Humerus." Current Anthropology 47:2.


Story Source:

The above story is based on materials provided by University of Chicago Press Journals. Note: Materials may be edited for content and length.


Cite This Page:

University of Chicago Press Journals. "The Evolution Of Right- And Left-handedness." ScienceDaily. ScienceDaily, 1 March 2006. <www.sciencedaily.com/releases/2006/02/060228175622.htm>.
University of Chicago Press Journals. (2006, March 1). The Evolution Of Right- And Left-handedness. ScienceDaily. Retrieved November 27, 2014 from www.sciencedaily.com/releases/2006/02/060228175622.htm
University of Chicago Press Journals. "The Evolution Of Right- And Left-handedness." ScienceDaily. www.sciencedaily.com/releases/2006/02/060228175622.htm (accessed November 27, 2014).

Share This


More From ScienceDaily



More Fossils & Ruins News

Thursday, November 27, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Classic Hollywood Memorabilia Goes Under the Hammer

Classic Hollywood Memorabilia Goes Under the Hammer

Reuters - Entertainment Video Online (Nov. 26, 2014) — The iconic piano from "Casablanca" and the Cowardly Lion suit from "The Wizard of Oz" fetch millions at auction. Sara Hemrajani reports. Video provided by Reuters
Powered by NewsLook.com
3D Map of Antarctic Sea Ice to Shed Light on Climate Change

3D Map of Antarctic Sea Ice to Shed Light on Climate Change

Reuters - Innovations Video Online (Nov. 24, 2014) — A multinational group of scientists have released the first ever detailed, high-resolution 3-D maps of Antarctic sea ice. Using an underwater robot equipped with sonar, the researchers mapped the underside of a massive area of sea ice to gauge the impact of climate change. Ben Gruber reports. Video provided by Reuters
Powered by NewsLook.com
Ruins Thought To Be Port Actually Buried Greek City

Ruins Thought To Be Port Actually Buried Greek City

Newsy (Nov. 24, 2014) — Media is calling it an "underwater Pompeii." Researchers have found ruins off the coast of Delos. Video provided by Newsy
Powered by NewsLook.com
Amphipolis Tomb Architraves Reveal Faces

Amphipolis Tomb Architraves Reveal Faces

AFP (Nov. 22, 2014) — Faces in an area of mosaics is the latest find by archaeologists at a recently discovered tomb dating back to fourth century BC and the time of Alexander the Great in Greece. Duration: 01:05 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:

Strange & Offbeat Stories

 

Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins