Your survey controls are flawed. It's quite likely that lefties respond more
often than righties, because righties believe they are "normal" (How wrong
could they be!) and needn't reply, whereas lefties want to "set the record
straight".
A proper control might be some sort of handedness-neutral survey, that slips
in the handedness questions.
Sorry to poop on your parade, but I believe the results can only be used to
categorize the "types" of lefties (within all replying lefties) and "types"
of righties. The relative numbers of each can not be assigned much validity
without further control information.
Dan / WG4S / K2 #2456
<snip>
Out of 49 respondents, and a world average of 10% left-handers (that
would be 4.9%), ...
</snip>
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