XIX
THE EXAMINATIONS AT WORK
Installation: the examiner; the forms; the room; the procedure; the
examiner as interviewer. Maintenance: modifications of procedure and
standards.
No research in vocational selection is complete which
stops short at this point, ignoring responsibility for the installation
 and maintenance of the new procedures.
Having proved to the satisfaction of himself and the management
 that the scientific method has disclosed certain
ways of measuring abilities which are valid in selecting
workers for the job in question and which promise an economic
 saving to the firm, it remains for the investigator to
see that these methods are properly installed. He should
also make sure that they are continued in operation either in
their original form or with only such changes as are clearly
demanded by changing employment conditions. He should
see that changes are made only after application of the same
rigorous scientific procedure which characterized the original
 study. Maintenance, as well as installation, is an indispensable
 stage of research in vocational selection.
INSTALLATION
The examiner. To administer application blanks, tests,
and other examinations after they have once been developed
is less of an undertaking than to carry out the original research.
 The investigator, to be free for other similar studies,
will prefer to select and develop assistants to do this routine
examining. An examiner should be a bright, accurate, tactful
 person, preferably with a background of experience in
the plant and in the interviewing room, as well as a familiara

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