44 
EMPLOYMENT PSYCHOLOGY 
this standard is determined is one of the most interesting 
and important steps in applying the results of an ex 
periment. 
The curves on the following page are drawn for each of 
the three significant tests. Before these curves were 
drawn, the inspectors tested were divided into two classes, 
the piece-workers and the day-workers. The piece 
workers are represented by the solid line, and consist of 
those who have made good as inspectors. The day-workers 
are represented by the dotted line, and consist of those 
who were too dull or slow to make piece-work. 
When the results of the tests are represented in this way, 
their practical significance for the employment office be 
comes immediately apparent. On the basis of their per 
formance in the tests, the day-workers and piece-workers 
separate themselves into two distinct groups, the day- 
workers on the right and the piece-workers on the left. 
The nearer the curves approach the left, the quicker and 
better the work in the tests. This is shown by the numbers 
on the horizontal line. These numbers, as has been stated, 
express the number of seconds taken to do the test in 
cluding corrections. The day-workers, for the most part, 
took so many more seconds that their curve is very far 
to the right. 
Now, if the employment manager had taken as the 
basis for selecting applicants the time represented by the 
points at which the two curves cross, what would have 
been the result? The applicants represented by the 
larger curve would have been accepted while those rep 
resented by the smaller curve would have been rejected. 
In brief, those applicants who subsequently proved their 
ability by becoming piece-workers would have been 
selected, while those who subsequently proved their