The history of the twelve-week return to the so-called original conditions of work is soon told. The daily and weekly output rose to a point higher t… - Elton Mayo

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The history of the twelve-week return to the so-called original conditions of work is soon told. The daily and weekly output rose to a point higher than at any other time and in the whole period "there was no downward trend." At the end of twelve weeks, in period thirteen, the group returned, as had been arranged, to the conditions of period seven with the sole difference that whereas the Company continued to supply coffee or other beverage for the mid-morning lunch, the girls now provided their own food. This arrangement lasted for thirty-one weeks—much longer than any previous change. Whereas in period twelve the group's output had exceeded that of all the other performances, in period thirteen, with rest-pauses and refreshment restored, their output rose once again to even greater heights