Today I did some research on my ambidexterity. I use my left hand for things like cutting, holding drinks and flipping coins (what self-respecting stats geek does not flip coins, after all?), but I write with my right hand. No one had ever noticed this in casual social situations until yesterday. During my seminar, one colleague asked me of the blue: “Why do you wear your watch on your right arm if you are not left-handed?” Good question. I guess I have always been more left-handed than right-handed, but my elementary school teacher did not believe in left-handedness, and neither did my parents.
And as much as I would like to believe the opposite, I am actually not uniqie, since according to Wikipedia:
Writing is not as good an indicator of handedness as it might seem, because many people who write with their right hand use their left for everything else.
and
In modern times, it is more common to find people considered ambidextrous who were originally left handed, and learned to be ambidextrous either deliberately or during childhood in institutions such as schools where right-handed habits are often emphasized
.
Still, this does not make it quite normal; there seems to be a disturbing link between mixed handedness and psychotic disorders. On the bright side, the Greeks used to encourage the skill, because it was helpful during combat. Famous people like Michaelangelo, Leonardo da Vinci and Benjamin Franklin used both their hands equally well. Apparantly, genius wanna-be’s should strive to become ambidextrous, and there are special exercises and products to help you grow a larger corpus callosa. Also known as the bundle of nerve fibers joining the right and left sides of the brain, it has been found to be 11% larger in left-handed and ambidextrous people. Some have actually put real effort into developing their ambidextrity.
And, as is always the case, any bizzare research question that one may come up with has already been answered by at least one experiment. Note the “Help Received” section!
Bottom line (© Pooch Cafe by Paul Gilligan):

