WOMAN SHOT, KILLEDWHITE HOUSE FENCE JUMPERSILENT CYCLES60 LBS. OF POTFOOTBALL HIGHLIGHTS
WTVC NewsChannel 9 :: News - Top Stories - International Left-Hander Day
Updated:
Wednesday, August 13 2014, 09:08 AM EDT
International Left-Hander Day
Today (Wednesday) is International Left-Handers Day. On the one hand, let’s celebrate the 10 percent or so of the population that favor their left hands for important tasks. On the other hand, this is the perfect time to toss out five little-known scientific facts about lefties.

Lefties can throw a punch

When researchers at the University of Montpellier in France surveyed nine primitive societies in five separate continents, they found a higher percentage of lefties translated into more frequent violent encounters. Furthermore, lefties often had the upper hand in a fight because of the element of surprise. No one expects a punch to come out of left field.

This same sneak attack seems to cross over into a sports advantage, the researchers speculated, especially in sports like boxing, tennis and fencing where opponents go head-to-head.

Animals have a paw preference, too

One British study, among others, found that about 40 percent of cats are southpaws, with an additional 10 percent happy to swat a ball of yarn with either paw. Another Brit study found paw preference in dogs is split about evenly.

It seems Fido takes sides with his tail, too. Last year, an Italian study suggested that when dogs wag their tails from right to left, it signifies happiness. Wagging from left to right demonstrates displeasure.

We love leftie leaders

The fact that five of our last seven commanders in chief (including President Obama) have been lefties is probably a coincidence. However, as one recent Dutch investigation suggested, right-handed politicians may want to fake it to the left.

Left-handed people tend to raise their left hands when speaking about something good whereas right-handers tend to raise their right hand. But in televised debates, when a person raises his or her right hand, it will appear on a viewer's left, just as if the person was sitting in a chair in front of them. For this reason, viewers subconsciously interpret left-hand movements as good and right-hand movements as bad.

Lefties use their brains differently

Lefties may use their noggins slightly differently from righties, the research suggests. For example, one Australian study found left-handed people access both hemispheres of their brain more readily than right-handed people, who tend to be left hemisphere-dominant.

There are advantages and disadvantages to using the brain with a more even distribution. Some studies find lefties to be more creative and more resilient when recovering from strokes. However, other studies imply lefties are more susceptible to ADHD, schizophrenia and other mental disorders.

Lefties are often left out

Scissors and computer mice were designed without a second thought for lefties. That’s inconvenient. But leaving left handed people out of the equation in scientific research may have far-reaching consequences, Dutch scientists have said.

Writing in the journal Nature earlier this year, the scientists pointed out that left-handed people have different brains and genes from right-handed people, yet are rarely included as study subjects. As a result, we may be missing out on important information in everything from neuroscience to genetic disorders, the scientists said.International Left-Hander Day

Advertise with us!

Related Stories

  • TN/GA Regional News
  • National News
  • International News
  • WTVC :: Community - The Good Life

    The Good Life

    Celebrating the events, adventures and activities that represent "The Good Life" in the NewsChannel 9 viewing area.
  • WTVC :: Community - Sideroads

    Sideroads

    Take a ride with Brian Smith to explore the unique people and places to be found along the Sideroads of the NewsChannel 9 viewing area.
  • WTVC :: Community - Road Trippin

    Road Trippin

    Come Road Trippin' with us and see all the great sites in your area!
  • WTVC :: Community - Closings and Delays

    Closings and Delays

    These are the latest School and Business Closings reported to NewsChannel 9. If you see errors or need to add a school or business, call 423-757-7320.
  • WTVC :: Community - This N That

    This N That

    Learn about the latest in community affairs and great events with Brian Smith on This 'N That.
  • WTVC :: Community - Educator of the Week

    Educator of the Week

    Nominate now for Educator Of The Week!
  • WTVC :: Community - Wednesday's Child

    Wednesday's Child



  • WTVC :: Community - Deaf & Hard of Hearing

    Deaf & Hard of Hearing

    Information provided to NewsChannel 9 by members of the Deaf and Hard of Hearing Community.
  • WTVC :: Community - Community Calendar

    Community Calendar



  • WTVC :: Community - Photo Galleries

    Photo Galleries



  • WTVC :: Community - Sponsored Events

    Sponsored Events

    Check Back Often for NewsChannel9 Sponsored Events!

NewsChannel9 Top Stories

Woman Shot, Killed Inside Catoosa County Home

Tennessee Trooper Resigns in Lieu of Termination

Fence Jumper at White House Sparks Evacuation

Family Speaks After Man Killed in Swimming Accident

NFL Joins Forces with Domestic Violence Groups

Senior Women's Softball Tournament Takes over Dalton

Erlanger Could Cut Ties With Insurance Provider

Line-up Begins at Midnight Friday for Free Medical Clinic in Ooltewah

Made in Our Hometown: Silent Cycles Creates Custom Bicycles

Traffic Stop Yields 60 Pounds of Pot, Suspect Remains at Large

Dalton Man Charged with Rape

Arrest Made for Creative Arts Guild Graffiti

NC Waitress Gets Generous Tip

Robber Messes with the Wrong Pregnant Woman

Local Lines Long for New iPhone

Home Depot Security Breach Affected 56 Million Credit & Debit Cards

TN Supreme Court Rules on Surrogacy Case

Candlelight Vigil for Jasmine Akins

GMC Morning Update for Friday

Scotland Will Remain Part of the United Kingdom

Florida Man Shoots Daughter, 6 Grandchildren in Apparent Murder-Suicide

Our Friday Facebook Friend of the Day

Deadly Industrial Accident in Dalton

AZA Grants Accreditation to the Chattanooga Zoo

Chattanooga Offers Incentives For Small Business Owners

Cleveland Couple Celebrating 25th Anniversary Stranded In Los Cabos

Peterson Case Sparks Debate Over Corporal Punishment

Authorities Seize Guns and Imported Meth From Sweetwater Home

Setback for Improvements to Wilcox Tunnel

GA Unemployment Rises; Job Seekers Attend Fair

Information Sought in Serious Assault

THP Stop in Bradley County Leads to Drug Arrest

Chattanooga Woman Repeatedly Stabbed

Cleveland Man Drowns at YMCA Pool

Rabid Raccoon Warning for the NewsChannel 9 Viewing Area

Fishermen Say Hiwassee River Trout Win a Reprieve

Arson Sniffing Dog Reporting for Duty in North Georgia

Suspected Drunk Driver Hits Power Pole in Dalton, Closing Street for the Day

Study: Artificial Sweeteners May Promote Diabetes

Consumer Problems and New Protections with Downloading Apple's New Software

US to Train Vets to Install Solar Panels

Record-Breaking Crowds Visit Historic WWII Ship

TN Death Row Inmate Appeals to Delay Execution

Man Drowns in Cleveland YMCA Pool

Womens' Softball Tournament Returns to Dalton for 3rd Year

Scotland is Voting Yes or No, to becoming Independent from U.K.

GMC Morning Update for Thursday

Our Thursday Facebook Friend of the Day

Two NFL Players, Peterson and Hardy, Ineligible to Play Over Abuse Allegations

Chattanoogans March For Peace

LST 325 to 'Put on a Show' as it Departs Thursday Morning

EPB Responds to City Audit

Chattanooga Lookouts Become Minnesota Twins Farm Team

Public Seemingly Unconcerned About Nuclear Safety

New Website to Monitor Taxpayer Spending

The Price of Freedom: Medal of Honor Recipient Brian Thacker

UTC Distinguished Scholars Awarded Checks

Roberts Mill Road in Hamilton Co. Reopened

Convicted Child Molester Sentenced in Murray County

Group Marches to 'Stop the Violence'

Federal Reserve Signals It Plans to Keep Key Interest Rate at Record Low

Sweetwater Father Charged with Forcing Alcohol on Son As Punishment

Skunk with Head Stuck in Beer Can Rescued

Report: LA Dodgers Moving AA Team from Chattanooga to Tulsa

East Brainerd Family Locates Stolen Truck

Archeologists Discover Buried Couple Holding Hands

Minnesota Vikings Change Mind, Suspend Adrian Peterson

FedEx Hiring 50,000 for Seasonal Work

New Mural Coming to Chattanooga's North Shore

Lolo Jones Voted Off Dancing with the Stars

Chattanooga Pilot Opens Up About Plane Crash

EPB Overbilled City $1.7 Million

GMC Morning Update for Wednesday

Bradley County EMS is Going to Washington

Bigoms Sentenced for Abuse of a Corpse

Our Wednesday Facebook Friend of the Day

Heroic School Bus Driver Killed Saving Child

10 Things to Know for Wednesday

World War II Veteran Takes Trip Back in Time Aboard LST

Donations Way Up for Firefighter MDA Fundraiser

Dalton Woman Honored for Service to Latino Community

What's the Future Hold for Chattanooga Baseball?

Aviation Experts: Regional Airlines Could Fail

Grand Jury to Weigh Case of NASCAR Driver Tony Stewart

Appeals Court Upholds Torture-Slaying Sentence

Five Arrested in Home Burglary

Dunlap Man Charged with Stealing Candy Company's "Trade Secrets"

Sinkhole in Whitfield County

Atlanta Braves Name Their New Stadium

Two Americans Killed in Suicide Bomb Attack

Top U.S. Military Leader Says Ground Troops on the Table to Fight ISIS

Hero Officer Blocks Speeding Car With Kids Inside

Speculation Swirls Over Fed Language on Rate Hike

Obama is Coming to Atlanta Tuesday

GMC Morning Update for Tuesday

Our Tuesday Facebook Friend of the Day

Apple Fans Trying to Buy the New I-Phone

Dodgers May Leave Town

A Bradley County Father Speaks Out After Indictments Issued

Alabama Man Awarded Medal of Honor for Actions in Vietnam

Advertise with us!

Newsmax Headlines

Sponsored content

Business News

Alibaba shares surge in debut on NYSE

NEW YORK (AP) -- Alibaba's stock is surging as the Chinese e-commerce powerhouse begins its first day trading as a public company.

Consumer Info

   WEST PALM BEACH, FL -- (Marketwired) -- 03/21/14 --
 Companies that pride themselves on being eco-friendly may have conflicted
 ideas between marketing with ad specialties and maintaining their green
 reputation. ...

Entertainment News

DARRELL HAMMOND TO TAKE OVER SNL ANNOUNCER'S ROLE FOR LATE DON PARDO

NEW YORK (AP) -- It's a new gig -- and an old one -- for Darrell Hammond.

Get This

MARIJUANA LEGALIZATION-POLL

WASHINGTON (AP) -- A new poll indicates that lots of folks in Washington, D.C.

Science/Tech News

IN THE NEWS: HOME DEPOT BREACH WAS EXTENSIVE

NEW YORK (AP) -- The nation's largest home improvement retailer now is confirming it is the victim of one of the largest data thefts in U.S.


 

Tonight on WTVC NewsChannel 9

3:00 College Football Countdown

3:30 Texas A&M at Southern Methodist

7:00 NewsChannel 9 Weekend

7:30 The Outdoorsman with Buck McNeely

8:00 Clemson at Florida State


11:30 NewsChannel 9 


Complete Schedule »


Road Trippin
No Text Zone
Pay It Forward
Makers Faire
Storm Track 9 Weather App