CLERKS 
S 7 
. Although, as has been pointed out, there were certain 
^adequacies in the tests applied as well as in the judg 
ments obtained from the office heads, the value of the 
r esults became more and mere clear with each passing 
month. The inspection or follow up conducted at the end 
°f each month showed a consistent increase in the per 
centage of agreement between the estimates based upon 
ne tests and those given by the office chiefs. For example, 
° n e hundred and eighty-eight clerks recommended on the 
asis of the tests and followed up at intervals of one 
month for a period of three months were estimated as 
follows: 
Percentage of those called good by their superiors 
At the end of one month 75% 
“ “ “ “ two months 89% 
“ “ “ “ three months 9 2 % 
n brief, the verdict of the tests was corroborated with 
mcreasing certainty as the various office heads learned 
know their workers better. Looking at the matter 
°m another angle, the verdicts rendered on the basis 
te sts occupying only a few minutes’ time were more 
liable than those rendered by the office heads after they 
a d known the workers thus selected for one, two, and 
e ^en three months. If tests have any value it is in this 
juty to effect in a few minutes a selection which time 
. m justify; and the measure of that value is the degree 
n "which succeeding months confirm this selection.