People seemed to have a love or hate reaction to keyboard modifications. Most people who liked a particular modification said they required more time to get used to it; but, they would like the chance to do so. It takes a long time to become accustomed a modification to something as familiar in it's current form.
There were no performance gains for modified keyboards in subjects with minimal exposure. Effects of keyboard usage during the short experimental time actually slowed down most typists performance. It is believed that with further exposure performance would improve
Future research should be done on long term effects of using these keyboards. Ten minutes or so is not long enough for subjects to see benifits. An interesting study could involve giving keyboards to a subject for a week to become accustomed to it and then testing them. That was not feasible during a semester long course; but, would be a more appropriate than the one used for this study. More subject should also be run; but this experiment spent too much time developing experimental tools and not enough time conducting the experiment. Also, different keyboards could be run.
On an even longer term, Keyboard C claims to minimize your chances of experiencing Carpal Tunnel Syndrome, Tendinitis, and Tenosynovitis. An interesting claim to verify; given enough time and resources as these conditions take years to develop.
The testing program created for this study has enough flexibility to be used for a number of different keyboard experiments. One possible use is to experimental determine Fitt's Law constants and/or find key combinations where Fitt's Law isn't consistant.
With tools in place, this experiment should be run again with more subjects. The tools built are robust and generate meaningful data. People will continually keyboard modifications because it seems like it could be better. Creating a meaningful way to analyze these modifications would be of value.