The Psychology of Management by Lillian Moller Gilbreth
3. time for overcoming delays.
1285 words | Chapter 118
Measurement must determine what percentage of the task time is
to be spent at work and what at rest, and must also determine
whether the rest period should all follow the completed work, or
should be divided into parts, these parts to follow certain cycles
through the entire work period.
The method of constructing the task is discussed under two
chapters that follow, Analysis and Synthesis, and Standardization.
Here we note only that the task is built up of elementary units
measured by motion study, time study, and micro-motion study.
When this standard task has been determined the worker's
efficiency can be measured by his performance of, or by the amount
that he exceeds, the task.
QUALIFICATIONS OF THE OBSERVER OR MEASURER.--The position of
observer, or as he has well been called, "trade revolutionizer,"
should be filled by a man specially selected for the position on
account of his special natural fitness and previous experience. He
also should be specially trained for his work. As in all other
classes of work, the original selection of the man is of vital
importance. The natural qualities of the successful hunter,
fisherman, detective, reporter and woodsman for observation of
minute details are extremely desirable. It is only by having
intimate knowledge of such experiences as Agassiz had with his
pupils, or with untrained "observers" of the trade, that one can
realize the lack of powers of observation of detail in the average
human being.
Other natural qualifications required to an efficient observer
are that of being
(a) an "eye worker";
(b) able to concentrate attention for unusually
long periods;
(c) able to get every thought out of a simple
written sentence;
(d) keenly interested in his work;
(e) accurate;
(f) possessed of infinite patience;
(g) an enthusiastic photographer.
The measurer or observer should, preferably, have the intimate
knowledge that comes from personal experience of the work to be
observed, although such a man is often difficult if not impossible
to obtain.
The position of observer illustrates another of the many
opportunities of the workmen for promotion from the ranks to higher
positions when they are capable of holding the promotion. Naturally,
other things being equal, no man is so well acquainted with the work
to be observed as he who has actually done it himself, and if he
have also the qualifications of the worker at the work, which
should, in the future, surely be determined by study of him and by
vocational guidance, he will be able to go at once from his position
in the ranks to that of observer, or time study man.
The observer must also familiarize himself with the literature
regarding motion study and time study, and must form the habit of
recording systematically the minutest details observable.
The effect upon the man making the observation of knowing that
his data, even though at the time they may seem unimportant, can be
used for the deduction of vital laws, is plain. He naturally feels
that he is a part of a permanent scheme, and is ready and willing to
put his best activity into the work. The benefits accruing from this
fact have been so well recognized in making United States surveys
and charts, that the practice has been to have the name of the man
in charge of the work printed on them.
ANYONE INTERESTED MAY BECOME AN OBSERVER.--A review of the
mental equipment needed by a measurer, or observer, will show that
much may be done toward training oneself for such a position by
practice. Much pleasure as well as profit can be obtained by
acquiring the habit of observation, both in the regular working and
in the non-working hours. Vocational Guidance Bureaus should see
that this habit of observation is cultivated, not only for the
æsthetic pleasure which it gives, but also for its permanent
usefulness.
UNBIASED OBSERVATION NECESSARY.--In order to take observations
properly, the investigator should be absolutely impartial,
unprejudiced, and unbiased by any preconceived notions. Otherwise,
he will be likely to think that a certain thing ought to happen. Or
he may have a keen desire to obtain a certain result to conform to a
pet theory. In other words, the observer must be of a very stable
disposition. He must not be carried away by his observations.
The elimination of any charting by the man who makes the
observations, or at least its postponement until all observations
are made, will tend to decrease the dangers of unconscious effect of
what he considers the probable curve of the observations should be.
As has been well said, watching the curve to be charted before
all of the data have been obtained develops a distinct theory in the
mind of the investigator and is apt to "bend the curve" or, at
least, to develop a feeling that if any new, or special, data do not
agree with the tendency of the curve--so much the worse for the
reputation of the data for reliability.
OBSERVED WORKER SHOULD REALIZE THE PURPOSE OF THE
MEASUREMENT.--The observed worker should be made to realize the
purpose and importance of the measurement. The observing should
always be done with his full knowledge and hearty coöperation. He
will attain much improvement by intelligent coöperation with the
observer, and may, in turn, be able to be promoted to observing if
he is interested enough to study and prepare himself after hours.
WORKER SHOULD NEVER BE OBSERVED SURREPTITIOUSLY.--No worker
should ever be observed, timed and studied surreptitiously. In the
first place, if the worker does not know that he is being observed,
he cannot coöperate with the observer to see that the methods
observed are methods of least waste. Therefore the motion study and
time study records that result will not be fundamental standards in
any case and will probably be worthless.
In the second place, if the worker discovers that he is being
observed secretly, he will feel that he is being spied upon and is
not being treated fairly. The stop watch has too long been
associated with the idea of "taking the last drop of blood from the
worker." Secret observations will tend strongly to lend credence to
this idea. Even should the worker thus observed not think that he
was being watched in order to force him, at a later time, to make
higher outputs, after he has once learned that he is being watched
secretly, his attention will constantly be distracted by the thought
that perhaps he is being studied and timed again. He will be
constantly on the alert to see possible observers. This may result
in "speeding him up," but the speed will not be a legitimate speed,
that results to his good as well as to that of his employer.
Worst of all, he will lose confidence in the "squareness" of his
employer. Hence he will fail to co-operate, and one of the greatest
advantages of Scientific Management will thus be lost.
It is a great advantage of micro-motion study that it demands
coöperation of the man studied, and that its results are open to
study by all.
AN EXPERT BEST WORKER TO OBSERVE.--The best worker to observe
for time study is he who is so skilled that he can perform a cycle
of prescribed standard motions automatically, without mental
concentration. This enables him to devote his entire mental activity
to deviating the one desired variable from the accepted cycle
of motions.
The difficulty in motion study and time study is not so often to
vary the variable being observed and studied, as it is to maintain
the other variables constant. Neither skill nor appreciation of what
is wanted is enough alone. The worker who is to be measured
successfully must
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