problem situations by supervisors or ergonomists, was developed
by Chen et al. (1991). The systemwas experimentally tested for ease
of use using 20 subjects who sawa series of photographic images of
a dishwashing task and they completed ease-of-use questionnaires
for the various interfaces, and there was a consensus that the system
was easy to use. The system was evaluated by comparing the
results of an analysis of a series of jobs by the software and by
expert diagnosticians, and the results showed an overall 83%
agreement between the results from the software and the expert
evaluators.