A Harvard University human motor systems test that attempts to guess your age knocked 16 years off me today!
The test is based on how quickly you can click on dots on the screen – it’s a bit like that eye-test where spots of light are shone on the inside of a hemisphere and you have to react to them. I wouldn’t say my reactions are particularly good, so why did I do so well?
I think it’s because I was using a trackball. The basic assumption of the test is that you’re using either a mouse or a trackpad, although it does provide an “other” option as part of a survey after the test’s completed.
I switched from mice to trackballs a number of years ago – not sure how many, but long enough to have had to replace one. People visiting my desk hate using the trackball (so much so that I have a “guest mouse” for when people come by), and adjusting to it was hard. In fact, for the first week, it was physically painful as I got accustomed to an entirely new set of movements. After that first week though, it was full speed ahead and I’ve never looked back. A trackball’s quicker and more accurate than a mouse, and my burgeoning RSI from dragging a mouse around went away.
My trackballs are thumb-driven ones from Logitech; for some reason finger trackballs seem to be more popular, but I wouldn’t have thought they can be so quick and efficient and surely must suffer from some of the problems of mice. The thumb’s a “spare” digit from a mousing point of view, but it’s great for driving a trackball; strong, and capable of fast, sharp and quite precise movements.
If you don’t believe me, give the test a go and see how you do!