A FIRST EXPERIMENT 
35 
Correlations 
Tests 
Inspectors 
Gaugers 
Card sorting 
55 
•OS 
lapping 
14 
•52 
Cancellation 
63 
• 17 
General intelligence 
14 
.18 
Number group checking 
72 
-.19 
It so happens that the very test which shows the highest 
correlation among inspectors shows the lowest correlation, 
a minus correlation, in fact, among the gaugers. This is 
quite in accord with the apparent fact that for the work 
°f inspection visual discrimination is probably the quality 
least necessary. An interesting fact was the absence of 
correlation between the test for intelligence involving the 
ability to read and follow easy directions, and the work 
°f both inspecting and gauging. This indicated that in 
telligence of this kind was not necessary for success at 
such work and this, so far as ordinary observation could 
tell, was quite true. The only test which shows a sig 
nificant correlation among gaugers is the tapping test. 
ms seems reasonable since, in both the test and the oper 
ation of gauging, speed of movement and endurance are 
the chief factors. The significance of this part of the 
experiment is therefore chiefly negative since it serves 
to bring out the fact that girls who, to the ordinary ob 
server and even to the trained employment manager, look 
Ver y much alike may still possess very different sets of 
qualifications. If all the gaugers and inspectors had been 
ln ed up before the employment window, it is highly im- 
P r obable that the employment manager would have been 
^ule by mere observation to make the radical division 
etween the applicants which the tests would have enabled 
lm to make.