value only. With the knowledge that
psychologists endorse accurate measurement, and will cooeperate in
discovering elements for study, instruments of precision and methods
of investigation, the investigator in industrial fields must persist
in his work with a new interest and confidence.[4]

Scientific Management cannot hope to furnish psychology with
either data or methods of measurement. It can and does, however,
open a new field for study to experimental psychology, and shows
itself willing to furnish the actual working difficulties or
problems, to do the preliminary investigation, and to utilize
results as fast as they can be obtained.

PSYCHOLOGISTS APPRECIATE SCIENTIFIC MANAGEMENT.--The
appreciation which psychologists have shown of work done by
Scientific Management must be not only a matter of gratification,
but of inspiration to all workers in Scientific Management.

So, also, must the new divisions of the Index to the
Psychological Review relating to Activity and Fatigue, and the work
being so extensively done in these lines by French, German, Italian
and other nations, as well as by English and American psychologists.

MEASUREMENT IMPORTANT IN MANAGEMENT.--The study of individuality
and of functionalization have made plain the necessity of
measurement for successful management. Measurement furnishes the
means for obtaining that accurate knowledge upon which the science
of management rests, as do all sciences--exact and inexact.[5]
Through measurement, methods of less waste are determined, standards
are made possible, and management becomes a science, as it derives
standards, and progressively makes and improves them, and the
comparisons from them, accurate.

PROBLEM OF MEASUREMENT IN MANAGEMENT--One of the important
problems of measurement in management is determining how many hours
should constitute the working day in each different kind of work and
at what gait the men can work for greatest output and continuously
thrive. The solution of this problem involves the study of the men,
the work, and the methods, which study must become more and more
specialized; but the underlying aim is to determine standards and
individual capacity as exactly as is possible.[6]

CAPACITY.--There are at least four views of a worker's
capacity.

1. What he thinks his capacity is.
2. What his associates think his capacity is.
3. What those over him think his capacity is.
4. What