ou think, do it and think it
with courage and with unwavering faith, fearing nothing.

Later on we shall instruct you in specific methods that will enable
you to follow this injunction. For the present we must be content with
emphasizing its importance.

[Sidenote: _Psychological Engineering_]

In what follows in this book we shall bring forth no new principle
of mental operation, but shall illustrate those already learned by
reference to certain practical uses to which they can be applied. Our
purpose in this is to impress you with the immense practical value of
the knowledge you are acquiring, and to show you that this course
of reading has nothing to do with telepathy, spiritism, clairvoyance,
animal magnetism, fortune-telling, astrology or witchcraft, but,
on the contrary, that in its revelation of mental principles and
processes it is laying a scientific basis for a highly differentiated
type of efficiency engineering.

CHAPTER VI

HOW TO SELECT EMPLOYEES

In the preceding volume, entitled "Making Your Own World," you learned
that reaction-time is the interval that elapses between the moment
when a sense-vibration reaches the body and the moment when perception
is made known by some outward response.

[Sidenote: _A Clue to Adaptability_]

Reaction-time can be made to furnish a clue to the adaptability of the
individual for any business, profession or vocation.

To determine the character, accuracy and rapidity of the mental
reactions of different individuals under different conditions, various
scientific methods have been evolved and cunning devices invented.

[Sidenote: _Mapping the Mentality_]

There are decisive reaction-time tests by which you may readily map
out your own mentality or that of any other person, including, for
instance, those who may seek employment under you.

Have you been harboring the delusion that "quick as thought" is a
phrase expressive of flash-like quickness? Have you had the idea that
thought is instantaneous? If so, you must alter your conceptions.

The fact is that your merely automatic reactions from
sense-impressions can be measured in tenths of a second, while a
really intellectual operation of the simplest character requires from
one to several seconds.

An important thing for you to know in this connection is that no two
people are alike in this respect. Some think quickly along certain
lines; some along other lines.

[Sidenote: _The Kind of "Help" You