I am curious to learn what people use for response boxes. I have happily used the Ergodex DX1 for years ( http://www.ergodex.com/mainpage.htm ) which is a custom keyboard that allows us to arrange buttons on a sheet of plastic and have them register as keyboard presses. The problem is the device is abandoned and getting it to work with operating systems after XP is difficult.
I want a good physical interface that can be used for 2, 3, or 4 interval forced choice tasks. I am not particularly concerned with accurate reaction time measures. A keyboard press speed is more than sufficient.
Any suggestions?