Via
this thread , I became interested in finding out exactly how many of our little
planet's population are left-handed. Finding out was not as simple as I'd anticipated, as there appears to have been very little in the way of
serious studies.
However....
A few years ago, the late M.P. Bryden, a professor of psychology at the University of Waterloo, worked out with several colleagues a
standardized questionnaire on handedness for use in any culture and then showed that it appears more often in some places than others.
Their research shows that in Canada and the U.K., the proportion of left-handers is about 11.5%. As one moves eastward the number falls: 7.5% in the
United Arab Emirates, 5.8% in India, 4% in Japan. In Africa, 7.9% of those in the Ivory Coast and 5.1% of those in the Sudan were
left-handed.
PDF link here
And according to another study (this time by Wysocki), people of Asian (9.3%) or Hispanic (9.1%) lineage are slightly less likely to be left-handed
than whites, blacks, or North American Indians.
Sooo...it appears that - at least without having further data to peruse - Western nations actually have a
higher percentage of lefties than
their more Easterly counterparts. Interestingly, in
non-human primates the split seems to
be about 50-50.
Something to add to your trivia collection
(and something to rebuke the claim that most non-Americans are left-handed. It appears that they're not...)