THE PORTABLE LABORATORY 6$ 
mdd interest and some jocular remarks. After that, noth- 
ln g more is said. 
When a man is to be examined, he is simply informed 
that it is his turn, his work ticket is stamped to show at 
w hat time he stops work—all subjects are paid out of a 
special cost account for the time occupied by psychological 
laminations, and special care is taken to make this pay 
generous—and he is then conducted into the laboratory, 
^ere he is properly seated and the necessary tests are 
§ 1Ve n to him. In all cases, tests to men are given by a 
male examiner, and as far as possible, all tests given to 
w ornen are given by a woman examiner. Since this work 
has become established, this is done without exception. 
Ahere women or girls are given tests by a male examiner, 
some woman in the shop, well known to all the girls, is 
chosen to accompany each subject. The door of the lab 
oratory is left part way open, and this woman sits just 
°utside where she can observe the process of the examina- 
ti°n. This precaution, while not absolutely essential, 
tlev ertheless serves to forestall any possible embarrass 
ment on the part of the girl being examined, and conse 
quently contributes to the reliability of the results of the 
tests. When the examination is conducted by a woman, 
™ s precaution is naturally unnecessary. 
The use of this laboratory has, on the whole, been quite 
satisfactory. It serves the purposes for which it is in 
tended admirably. It is convenient; it can be set up or 
taken down very quickly—in three minutes to be exact; 
m fits well into any available space in the shop; it is in 
tensive; it saves an enormous amount of time which 
'''Quid otherwise be consumed by having the necessary 
subjects come some distance to a more remote stationary 
Moratory for examination.