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Category: Science
Date: 06/14/13 08:49 AM

6 Responses to Why Are There Righties and Lefties?

  1. Profile photo of ElectricEye
    ElectricEye Male 40-49
    2720 posts
    June 14, 2013 at 8:53 am
    Link: Why Are There Righties and Lefties? - Ever wonder why you are right handed or left handed?
  2. Profile photo of Geogypsy
    Geogypsy Female 18-29
    2530 posts
    June 14, 2013 at 4:07 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.
  3. Profile photo of xfactormunky
    xfactormunky Male 18-29
    116 posts
    June 15, 2013 at 3:12 am
    This guy talks EXACTLY like the guy from mental floss, it`s kinda spooky
  4. Profile photo of OldOllie
    OldOllie Male 60-69
    15845 posts
    June 15, 2013 at 8:36 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?
  5. Profile photo of draino123
    draino123 Male 30-39
    768 posts
    June 16, 2013 at 1:18 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.
  6. Profile photo of Zequr
    Zequr Female 18-29
    138 posts
    June 17, 2013 at 4:44 am
    Did you know that male cats usually are left handed?

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