FWIW, I'm left-handed but switch the mouse from side-to-side periodically so
that I use both wrists equally and give one a break from the repetitive
movement. Anyway (this *is* related to your observation), my mouse here at
work is currently on the left side of my keyboard and when not using the
cursor, I generally leave it hovering in the upper right area of the screen,
which is consistent with your observation for right-handed people. My
thought is that it's not a handedness thing at all, but a convenience thing.
Leaving the cursor on the right puts it near the scroll bar. It may be
application-related, as someone else suggested. If you're using an app that
requires a lot of mousework on the left side of the screen, you might leave
the mouse cursor in that area when not in use. I'll have to try to notice
that in the future. :)

Bev Parks
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> -----Original Message-----
> From: Charlie Nichols [SMTP:[log in to unmask]]
>         I also have this little theory/observation about the majority of
> the
> population being right-handed, and moving their cursors/mouse to the
> "right-ish" area of the screen to type or read. Therefore the right side
> of
> the screen would also be closer and more convenient for them to click
> submit, which you obviously want them to do.    I have no studies, just
> casual observations and theories, so please feel free to let me know what
> you think... 8-)
>