Applied Psychology

MAKING
YOUR OWN WORLD

CONTENTS

III. The Mind is the instrument you must employ for the accomplishment of any purpose.

With these three fundamental propositions as postulates, it will be the end and aim of this Course of Reading to develop plain, simple and specific methods and directions for the most efficient use of the mind in the attainment of practical ends.

To comprehend these mental methods and to make use of them in business affairs you must thoroughly understand the two fundamental processes of the mind.

These two fundamental processes are the Sense-Perceptive Process and the Judicial Process.

The Sense-Perceptive Process is the process by which knowledge is acquired through the senses. Knowledge is the result of experience and all human experience is made up of sense-perceptions.

The Judicial Process is the reasoning and reflective process. It is the purely "intellectual" type of mental operation. It deals wholly in abstractions. Abstractions are constructed out of past experiences.

Consequently, the Sense-Perceptive Process furnishes the raw material, sense-perceptions or experience, for the machinery of the Judicial Process to work with.

In this book we shall give you a clear idea of the Sense-Perceptive Process and show you some of the ways in which an understanding of this process will be useful to you in everyday affairs. The succeeding book will explain the Judicial Process.

The impressions you receive in this way may be true or they may be false. They may constitute absolute knowledge or they may be merely mistaken impressions. Yet, such as they are, they constitute all the information you have or can have concerning the world about you.

Philosophers have been wrangling for some thousands of years as to whether we have any real and absolute knowledge, as to whether matter actually does or does not exist, as to the reliability or unreliability of the impressions we receive through the senses. But there is one thing that all scientific men are agreed upon, and that is that such knowledge as we do possess comes to us by way of perception through the organs of sense.

If you have never given much thought to this subject, you have naturally assumed that you have direct knowledge of all the material things that you seem to perceive about you. It has never occurred to you that there are intervening physical agencies that you ought to take into account.

When you look up at the clock, you instinctively feel that there is nothing interposed between it and your mind that is conscious of it. You seem to feel that your mind reaches out and envelops it.

As a matter of fact, your sense impression of that bit of furniture must filter through a great number of intervening physical agencies before you can become conscious of it.

Direct perception of an outside reality is impossible.

Before you can become aware of any object there must first arise between it and your mind a chain of countless distinct physical events.

Modern science tells us that light is due to undulations or wave-like vibrations of the ether, sound to those of the air, etc. These vibrations are transmitted from one particle of ether or air to another, and so from the thing perceived to the body of man.

Think, then, what crisscross of air currents and confusion of ether vibrations, what myriad of physical events, must intervene between any distant object and your own body before sensations come and bring a consciousness of that object's existence!

Nor can you be sure, even after any particular vibration has reached the surface of your body, that it will reach your mind unaltered and intact!

What goes on in the body itself is made clear by your knowledge of the cellular structure of man.

You know that you have a system of nerves centering in the brain and with countless ramifications throughout the structural tissues of the body.

You know that part of these nerves are sensory nerves and part of them are motor nerves. You know that the sensory nerves convey to the brain the impressions received from the outer world and that the motor nerves relay this information to the rest of the body coupled with commands for appropriate muscular action.

The outer end of every sensory nerve exposes a sensitive bit of gray matter. These sensitive, impression-receiving ends constitute together what is called the "sensorium" of the body.

When vibrations of light or sound impinge upon the sensorium, they are relayed from nerve cell to nerve cell until they reach the central brain. Then it is, and not until then, that sensations and perceptions occur.

Consider, now, the infinitesimal size of a nerve cell and you will have some conception of the number of hands through which the message must pass before it is received by the central office.

Many of our sensations, especially those of touch, seem to occur on the periphery of the body—that is to say, at that part of the exposed surface of the body which is apparently affected. If your finger is crushed in a door, the sensation of the blow and the pain all seem to occur in the finger itself.

As a matter of fact, this is not the case, for if one of your arms should be amputated, you would still feel a tingling in the fingers of the amputated arm. Thus has arisen a superstition that leads many people to bury any part of the body lost in this way, thinking that they will never be entirely relieved of pain until the absent member is finally at rest.

Of course, the fact is that you would only seem to have feeling in the amputated arm. The sensation would really occur in the central brain tissue as the organ of the governing intelligence, the organ of consciousness.

And you may set it down as an established principle that all states of consciousness, whether seemingly localized on the surface of the body or not, are connected with the brain as the dominant center.

The facts we have been recounting have been established by the experiments of physiological psychology. Thus, the work of the laboratory has shown that between the moment when a sense vibration reaches the body and the moment when sensation occurs a measurable interval of time intervenes.

If your eyes were to be blindfolded and your hand unexpectedly pricked with a white-hot needle, the time that would elapse before you could jerk your hand away could be readily measured in fractions of a second with appropriate instruments.

This interval is known as reaction-time. It varies greatly with different persons. During this reaction-time, the cell or cells attacked upon the surface of the hand have conveyed news of the assault through numberless intermediate sensory nerve cells to the brain. The brain in turn has sent out its mandate through the appropriate motor nerve cells to all the muscle and other cells surrounding the injured cell, commanding them to remove it from the point of danger.

The work of the nervous system in dealing with the ether vibrations that are constantly impinging upon the surface of the body has been likened to that of the transmitter, connecting wire and receiver of a telephone. Air-waves striking against the transmitter of the telephone awaken a similar vibratory movement in the transmitter itself. This movement is passed along the wire to the receiver, which vibrates responsively and imparts a corresponding wave-like motion to the air.

These air-waves when heard are what we call sound.

In the same way, air-waves striking the ear are communicated by the auditory nerve to the brain, where they awaken a corresponding sensation of sound. But these waves must be vibrating at between 30 and 20,000 times a second. If they are vibrating so slowly or so rapidly as not to come within this range, we cannot hear them.

This process is by no means a mechanical affair. On the contrary, it is a series of mental acts. Every cell in the living telegraph must receive the message and transmit it. Every cell must exercise a form of intelligence, from the auditory cell reporting a sound-wave or the skin cell reporting an injury to the muscle cells that ultimately receive and understand a message directing them to remove the part from danger.

Reaction-time, so called, is thus occupied by cellular action in the form of mental processes intervening between the nerve-ends and the brain center, in much the same way that light and sound vibrations intervene between the object perceived and the surface of the body.

For even the simplest of sense-perceptions we have, then, this sequence of events: first, the object perceived; second, the series of vibrations of ether particles intervening between the object and the body; third, the impression upon the surface of the body; fourth, the series of mental processes, cell after cell, in the nerve filaments leading to the brain; fifth, when these impressions or messages have reached the brain, a determination of what is to be done; and, sixth, a transmission by cellular action of a new message that will awaken some response in the muscular tissues.

This process is completely carried out, however, in only comparatively few instances. The vast majority of sense-impressions awaken no reaction. They are registered in the mind, but they are not perceived. We are not conscious of them. They form a part, not of consciousness, but of subconsciousness. They are messages that reach the mind but are laid aside like unopened mail because they possess no present interest.

Wherever and however you may be placed, you are always and everywhere immersed in a flood of etheric vibrations. Light, sound and tactual vibrations press upon you from every side. At a busy corner of a city street these vibrations rise to a tumultuous fortissimo; in the hush of a night upon the plains they sink to pianissimo. Yet at every moment of your day or night they are there in greater or less degree, titillating the unsleeping nerve-ends of the sensorium.

Your mind cannot take time to make all these sense-impressions the subject of conscious thought. It can trouble itself only with those that bear in some way upon your interests in life.

Your mind is like the receiving apparatus of the wireless telegraph which picks from the air those particular vibrations to which it is attuned. Your mind is selective. It is discriminating. It seizes upon those few sensory images that are related to your interests in life and thrusts them forward to be consciously perceived and acted upon. All others it diverts into a subconscious reservoir of temporary oblivion.

You will have a clearer understanding of the sense-perceptive processes and a more vital realization of the practical significance of these facts when you consider how they affect your knowledge of material things and your conception of the external world.

This subject possesses two distinct aspects.

One aspect has to do with the inability of the sense-organs to record the facts of the outer world with perfect precision. These organs are the result of untold ages of evolution, and, generally speaking, have become wonderfully efficient, but they display surprising inaccuracies. These inaccuracies are called Sensory Illusions.

The other aspect of the Sense-Perceptive Process has to do with the mental interpretation of environment.

Both these aspects are distinctly practical.

You should know something of the weaknesses and deficiencies of the sense-perceptive organs, because all your efforts at influencing other men are directed at their organs of sense.

You should understand the relationship between your mind and your environment, since they are the two principal factors in your working life.

In Figure 2 the lines A and B are of the same length, yet the lower seems much longer.

Those things look smallest over which the eye moves with least resistance.

In Figure 3, the distance from A to B looks longer than the distance from B to C because of the time we involuntarily take to notice each dot, yet the distances are equal.

For the same reason, the hatchet line (A–B) appears longer than the unbroken line (C–D) in Figure 4, and the lines E and F appear longer than the space (G) between them, although all are of equal length.

Filled spaces look larger than empty ones because the eye unconsciously stops to look over the different parts of the filled area, and we base our estimate upon the extent of the eye movements necessary to take in the whole field. Thus the filled square in Figure 5 looks larger than the empty one, though they are of equal size.

White objects appear much larger than black ones. A white square looks larger than a black one. It is said that cattle buyers who are sometimes compelled to guess at the weight of animals have learned to discount their estimate on white animals and increase it on black ones to make allowances for the optical illusion.

The dressmaker and tailor are careful not to array stout persons in checks and plaids, but try to convey an impression of sylph-like slenderness through the use of vertical lines. On the other hand, you have doubtless noticed in recent years the checkerboard and plaid-covered boxes used by certain manufacturers of food products and others to make their packages look larger than they really are.

The advertiser who understands sensory illusions gives an impression of bigness to the picture of an article by the artful use of lines and contrasting figures. If his advertisement shows a picture of a building to which he wishes to give the impression of bigness, he adds contrasting figures such as those of tiny men and women so that the unknown may be measured by the known. If he shows a picture of a cigar, he places the cigar vertically, because he knows that it will look longer that way than if placed horizontally.

A subtle method of conveying an idea of bigness is by placing numbers on odd-shaped cards or blocks, or on any blank white space. The object or space containing the figures always appears larger than the corresponding space without the figures.

This fact has been made the basis of a psychological experiment to determine the extent to which a subject's judgment is influenced by suggestion. To perform this experiment cut bits of pasteboard into pairs of squares, circles, stars and octagons and write numbers of two figures each, say 25, 50, 34, 87, etc., upon the different pieces. Tell the subject to be tested to pick out the forms that are largest. The susceptible person who is not trained to discriminate closely will pick out of each pair the card that has the largest number upon it.

This test can be made one of a series used in examining applicants for commercial positions. It can also be used to discover the weakness of certain employees, such as buyers, secretaries and others who are entrusted with secrets and commissions requiring discretion, and who must be proof against the deceptions practiced by salesmen, promoters and others with seductive propositions.

This examination can be carried still further to test the subject's credulity or power of discrimination. What is known as the "force card" test was originally devised by a magician, but has been adopted in experimental psychology. Take a pack of cards and shuffle them loosely in the two hands, making some one card, say the ace of spades, especially prominent. The subject is told to "take a card." The suggestive influence of the proffered card will cause nine persons out of ten to pick out that particular card.

Turning from illusions of suggestion, shape and size, another field of peculiar sensory illusions is found in color aberration. Some colors look closer than others. For instance, paint an object red and it seems nearer than it would if painted green.

Aside from the obvious uses to which these sense-illusions can be put, they form the basis for a number of psychological experiments to test the abilities of persons in many ways. Here is a test which deals with the range of attention. If you desire to discover the capacity of any person to pay attention to unfamiliar questions or subjects which might at some future time have great importance, try this test. Have a piece of pasteboard cut into squares, circles, triangles, halfmoons, stars and other forms. Then write upon each piece some such word as hat, coat, ball or bat. The objects are then placed under a cloth cover and the subject to be examined is told to concentrate his attention on the shapes alone, paying no attention to the words. The cloth is lifted for five seconds and then replaced. The subject is then told to draw with a pencil the different shapes and such words as he may chance to remember. The experiment should then be repeated, with the injunction to pay no attention to the shapes but to remember as many words as possible, and write them down on such forms as he may happen to recall.

Of course, the real object is to determine whether the subject will see more than he is told, or whether he is a mere automaton. The result will tell whether his attention is of the narrow or broad type. If it be narrow, he will see only the forms in the first case and no words, and in the second case he will remember the words but be unable to recall the shape of the pieces of cardboard.

His breadth of attention will be shown by the number of correct forms and words combined which he is able to remember in both cases. In other words, this will measure his ability to pay attention to more than one thing at a time.

Other things being equal, the narrow type of attention belongs to a man fitted for work as a bookkeeper or mechanic, while the broad type of attention fits one for work as a foreman or superintendent or, lacking executive ability, for work requiring the supervision of mechanical operations widely separated in space.

The ordinary man sees but one thing at a time, while the exceptional man sees many things at every glance and is prepared to remember and act upon them in emergency.

Having determined a person's scope of attention, you may want to test his accuracy in details as compared with other men. To conduct such an experiment dictate a statement which will form one typewritten letterhead sheet. This statement should comprise facts and figures about your business of which the subjects to be tested are supposed to have accurate knowledge. After this original page is written, have your typist write out another set of sheets in which there are a large number of errors both in spelling and figures. Then have each of the persons to be examined go through one of these sheets and cross out all the wrong letters or figures. Time this operation. The man who does it in the quickest time and overlooks the fewest errors, naturally ranks highest in speed and accuracy of work.

Look into your own business and you will undoubtedly find some department, whether it be store decoration, office furnishing, window dressing, advertising, landscape work or architecture, in which a systematic application of a knowledge of sensory illusions will produce good results.