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Why Are There Righties and Lefties?

Ever wonder why you are right handed or left handed?

submitted by: ElectricEye
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Why Are There Righties and Lefties?. Ever wonder why you are right handed or left handed?
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Hits: 4966 | Favorites: 0 | Emailed: 0 | Rating: 2.5 | Category: Science | Date: 06/14/2013
 
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Zequr
Female, 18-29, Europe
 132 Posts
Monday, June 17, 2013 4:44:19 AM
Did you know that male cats usually are left handed?

draino123
Male, 30-39, Southern US
 581 Posts
Sunday, June 16, 2013 1:18:12 AM
@OldOllie spiral notebooks are an annoyance, but what is really difficult to write in is a 3 ring binder. especially one that has big rings. I am left handed but i do many thing with my right, im sure if i practiced i could be ambidextrous. i do think it is weird watching a lefthanded person write with their wrist curved over their paper. i dont do that.

OldOllie
Male, 60-69, Midwest US
 14120 Posts
Saturday, June 15, 2013 8:36:51 PM
I never noticed it being particularly annoying to write on the back of pages in a spiral notebook. Why would lefties have a problem writing on the front?

xfactormunky
Male, 18-29, Midwest US
 115 Posts
Saturday, June 15, 2013 3:12:41 AM
This guy talks EXACTLY like the guy from mental floss, it's kinda spooky

Geogypsy
Male, 18-29, Canada
 2407 Posts
Friday, June 14, 2013 4:07:44 PM
Woo hoo for having less of a neurological bias!
That description was very brief based upon the magnitude of hypotheses that have been committed to hand preferences. One of my favored (and one of the more outlandish) proposals is that left handedness is caused by higher than normal levels of testosterone in utero. This imbalance is purported to slightly mutate the left hemisphere causing a right hemisphere preference. Higher than normal levels of testosterone in utero may also account for why the incidence of female left-handedness is thought to be even less common.

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