ABSTRACT
It might be supposed that of all performance tests, those relating to the output of the industrial worker during the course of his working day would be the most likely to yield indications of fatigue, if such fatigue existed. In some instances fatigue processes may never be sufficient to overpower practice-efficiency, and the output may rise steadily throughout each spell of work. The most striking instance of end-spurt relates to the output of four men who were engaged on the heavy operation known as ‘hand-tapping fuse sockets.’ The majority of hourly output curves do not show any one of the three typical features of fatigue, practice-efficiency and end-spurt to such a marked degree as in the examples recorded. Daily output variations show all the same features that are observed in hourly output variations.
