They use the ruler-drop test to measure how fast they react, and see how distractions such as doing a sum or remembering a series of letters effects their timings. The more they practice ...

You could carry out a number of investigations to determine the effect of a specific factor on human reaction times. A simple method to measure the effect is to use the ruler drop test.

Choosing one of the preset margin width alternatives in this drop-down menu ensures consistency ... and dragging the margin markers on the ruler. Just make sure you don't leave the margins too ...

DROP make some of the finest keyboards on the market today, I should know, I actually bought my son one a few years ago, and ...