What are the advantages and disadvantages of being

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WHAT ARE THE ADVANTAGES
AND DISADVANTAGES OF BEING
LEFT-HANDED?
By: Brianna Philipsen
Science 7
INFORMATION ON LEFT HANDERS
 10%
of the world’s population is left
handed
 Being left handed is not part of the hand
it is part of the brain
 Left handed people use the right side of
their brain
 Males are 1 ½ times more likely to be left
handed then females
INFORMATION ON LEFT HANDERS
 If
you are RR or Rr you are right handed
 If you are rr you have no preference
 Left handed baseball players are called
South Paws
DISADVANTAGES
 Left
handed people approximately live 9
years less than right handed people
 Stuttering and dyslexia occur more in left
handed people
 Left-handedness causes carpel tunnel
 They are more likely to have allergies
than right handed people
DISADVANTAGES
 Left
handed people are more likely to be
alcoholics than right handed people
 They get more migraines than right
handed people
 More than likely they won’t be able to roll
your tongue
 They have trouble with scissors and
binders
ADVANTAGES
 Left
handed people recover from strokes
faster than right handed people
 They also see underwater better
 Left handed people are proven to be better
at tennis, baseball, and fencing
FUN FACTS ABOUT LEFT HANDED PEOPLE
 Left
Handed people draw pictures facing
the right
 There is a high chance that one twin will
be left handed
 Identical twins might have different hand
preferences
 Babies who are born to older moms are
more likely to be left handed
FUN FACTS ABOUT LEFT HANDED PEOPLE
 Left
handed peoples fingernails grow
faster on their left hand than their right
 Moms who were stressed out when they
were pregnant are more likely to be left
handed
 Researchers believe that the gene for left
handers is LRRTM1
 It is believed that there is more left
handed males than females
ANIMOTO
REFERENCES


Hirshon, Bob, auth. "South Paw Minority." South
Paw Minority. Advancing Science Serving
Society, 18 Apr 2008. web. 08 Dec 2011.
<http://sciencenetlinks.com/science-news/scienceupdate/southpaw-minority/>.
Wheat, David. "Science in Action." Science
Update. Science Update, 07 Dec 2004. Web. 08
Dec 2011. <http://sxxz.blogspot.com/2004/12/areyou-left-handed-do-you-know.html
REFERENCES


Ulken, Eric. "Fun Facts about left handedness."
Seattle Times. Seattle Times, 16 Jun 2003. Web.
12 Dec 2011. <http://ulken.com/2003/06/16funfacts-about-left-handedness/>.
Leen, Leen. "left handedness and right
handedness." left handedness and right
handedness. xanga.com, 08 Oct 2007. Web. 13
Dec 2011.
<http://bubbiosity.xanga.com.com/620314158/lefthandedness/>.
REFERENCES



Milsom, Keith. "Left Handed Tour." Left handed
fascinating Facts. Left Handers Day, n.d. Web. 13 Dec
2011. <http://www.lefthandersday.com/tour6.html>.
"Fun Left handed Facts." Questions Kids Ask about.
askkids.com, n.d. Web. 13 Dec 2011.
<http://askkids.com/resource/Facts-on-Left-HandedPeople.html/>.
"25 Amazing Facts About Left Handed People."
leftyfretz.com. leftyfretz.com, n.d. Web. 13 Dec 2011.
<http://leftyfretz.com/25-facts-about-left-handedpeople/>.
REFERENCES


Layton, Julia. "are left handers quicker thinkers
than righties?." discovery fit& health. N.p., n.d.
Web. 13 Dec 2011.
<http://health.howstuffworks.com/humanbody/parts/left-handed.html>.
Binns, Corey. "What makes a lefty:myths and
mysteries persist." Live Science. Live Science, 21
Mar 2006. Web. 14 Dec 2011. <
http://www.livescience.com/655-lefty-mythsmysteries-persist.html>.

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