SELECTING GIRLS AS ASSEMBLERS 61 "After this training, the man is put on piecework, and then, lf he has the natural ability to speed up, he'iwilj make good. However, if he lacks this ability, he will eithenfaij to make his Piece-work rate and quit, or he will speed up arid $uin the Wo rk and have to be laid off. “ If we could find out beforehand whether a man would have the necessary speed after he has been trained how to do the w °rk, it would save us a good many very expensive trials.” experiment among men assemblers will be described ln a subsequent chapter. The significant tests are being continued in use for the selection of women assemblers, an d as soon as a sufficient number have been working at ° ne kind of assembling for a certain length of time, an ther attempt to find the correlations will be made. In the meanwhile, there are many kinds of assem- b bng, similar and yet unlike that described here, to which tests could be applied. Almost every manufacturing process ends with assembling operations, some of which are complex, some very simple. Innumerable packing operations are really a sort of assembling, and require Workers of more than average dexterity. The assembling °I locks, clocks, and watches also requires peculiar nimble- jress. All of these assembling tasks warrant experiment- ln g to find tests which will consistently select the best as semblers.