Two documents, both of which concern illumination studies, are presented. The first is a report on the illumination study at Hawthorne, which began Nov. 24, 1924 and ended April 30, 1927. In this study, candles of various lengths were introduced...
Interviews with the relay assembly test room operators to find out why there was low inspection efficiency. The observer concluded that talking did not delay production, but probably decreased concentration. The group had the tendency to go fast...