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. But it would be most desirable that
such studies be undertaken at various places according to various
schemes in order to come nearer to the solution of a problem which is
economically important to the whole public and to many thousands of
employees. As soon as methods are really perfected it would seem not
at all impossible that by a short experiment of a few minutes
thousands of applicants might be saved long months of study and
training which are completely wasted. For us here the detailed
analysis of this particular case did not mean a suggestion to use
to-day in the telephone offices of the country the special scheme
which we applied, but it stood only as a clear, simple illustration
of a method by which not the specific work itself is tested, but by
which the industrial work of the individual is resolved into a long
series of parallel functions each one of which is tested
independently.
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