ir achievement, which, to be
sure, is likely to be coupled with a dangerous exhaustion. The slight
disagreements between the psychological results and the practical
valuation, therefore, do not in the least speak against the
significance of such a method. On the other hand, I emphasize that
this first series meant only the beginning of the investigation, and
it can hardly be expected that at such a first approach the best and
most suitable methods would at once be hit upon. A continuation of the
work will surely lead to much better combinations of test experiments
and to better adjusted schemes."

[Sidenote: _How to Identify the Unfit_]

Analytical test studies such as the foregoing form an almost
infallible means for finding out the unfit at the very beginning
instead of after a long and costly experimental trying-out in
vocational training-school or in actual service.

Whatever your line of business may be, you may rest assured that an
analysis of its needs will disclose numerous departments in which
specific mental tests and devices may be employed with a great saving
in time and money and a vastly increased efficiency and output of
working energy.

[Sidenote: _Means to Great Business Economies_]

Suppose that you are the manager of a street railroad employing a
large number of motormen. Would it not be of the greatest value to
you if in a few moments you could determine in advance whether any
given applicant for a position possessed the quickness of response to
danger signals that would enable him to avoid accidents? Think what
this would mean to the profits of your company in cutting down the
number of damage claims arising from accidents! Some electric railroad
companies have as many as fifty thousand accident indemnity cases per
year, which involve an expense amounting in some cases to thirteen
per cent of the annual gross earnings. Yet a comparatively simple
mechanism has been devised for determining by the reaction-time of any
applicant whether he would or would not be quick enough to stop his
car if a child ran in front of its wheels.

[Sidenote: _Round Pegs in Square Holes_]

The general employment of this test would result in the rejection of
about twenty-five per cent of those who are now employed as motormen
with a correspondingly large reduction in the number of deaths and
injuries from street-car accidents. And on the other hand, the general
use of psychological tests in other lines of work woul