Abstract
The purpose of this study is to examine the correlation structure between pulse speed variability curve and input human error curve in order to develop a new prediction method for input human errors. From 393 experiments with 40 subjects who performed typewriting and calculating for 400 man-hours, it was found out that almost all experiments presented a statistical significant (less than the 1% level) correlation between the two curves on condition of pulse onward difference (POD) existed between both curves and the POD has a great influence on the (+) and (-) of coefficient of correlation between both curves.
