IV

There is, however, one important factor lacking in the conjurer's

performance to illustrate completely the psychology of deception;

it is that the mental attitude of the observer is too definite. He

knows that he is being deceived by skill and adroitness, and rather

enjoys it the more, the more he is deceived. He has nothing at stake;

his mind rests easy without any detailed or complete explanation

of how it was done. Quite different must have been the feeling of

the spectator before the necromancer of old, in whose performance

was seen the evidence of secret powers that could at a moment's

notice be turned against any one to take away good luck, to bring on

disease, or even to transform one into a beast. When magic spells

and wonder-working potions were believed in, what we would now speak

of as a trick was surrounded with a halo of awe and mystery by the

sympathetic attitude of the spectators. The most complete parallel

to this in modern times is presented by the physical phenomena

of Spiritualism; and so many of the manifestations presented by

performing mediums in evidence of Spiritualism have been exposed and

proven to be conjuring tricks, that it is no longer an assumption to

consider them in this connection. Spiritualistic phenomena present

a perfect mine for illustrations of the psychology of deception, and

it is these that I shall consider as the final topic in this cursory

view.

The first general principle to be borne in mind is that the medium

performs to spectators _in doubt_ as to the interpretation to be

placed upon what they see, or more or less prepared or determined

to see in everything the evidence of the supernatural. This mental

attitude on the part of the spectators is worth more to the medium

than any single factor in the performance. The difference between

such a presentation and one addressed to persons cognizant of the

conjuring element in the performance and interested in its detection,

cannot be exaggerated. It is this that makes all the difference

between the séance swarming with miracles, any one of which

completely revolutionizes the principles of science, and the tedious

dreariness of a blank sitting varied only by childish utterances and

amateurish sleight-of-hand. Careful observers often report that the

very same phenomena that were utterly beyond suspicion in the eyes of

believers are to unprejudiced eyes so apparent "that there was really

no need of any elaborate method of investigation"; close observation

was all that was required, and Mr. Davey, who conducted an admirable

investigation of the reliability of accounts of sleight-of-hand

performances, has experimentally shown that of equally good

observers, the one who is informed of the general _modus operandi_ by

which such a phenomenon as "slate-writing" is produced will make much

less of a marvel of it than one who is left in doubt in this regard.

With these all-powerful magicians--an expected result and the

willingness to credit a marvel--clearly in mind, let us proceed from

those instances in which they have least effect up to the point where

they form the chief factor. First come a host of conjuring tricks

performed on the stage in slightly modified forms, but which are

presented as "spiritualistic." So simple a trick as scratching a name

on one's hand with a clean pen dipped in water, then writing the

name on a slip of paper, burning the slip and rubbing the part with

the ashes, thus causing the ashes to cling to the letters formed on

the hand and reveal the name, has been offered as a proof of spirit

agency. Whenever an article disappears or rapidly changes its place,

the spiritualist is apt to see the workings of hidden spirits; and

over and over again have the performances of professional conjurers

been declared to be spiritual in origin in spite of all protest from

the conjurers themselves. Here everything depends upon the possession

of certain technical knowledge; judging without such knowledge is apt

to be mere prejudice. Another very large class of phenomena consists

of those in which the performer is placed in a position apparently

inconsistent with his taking any active part in their production;

rope-tying tests, cabinet séances, the appearance of a "spirit-hand"

from behind a screen, locking the performer in a cage, sewing him

in a bag, and so on. The psychologist has very little interest in

these; their solution depends upon the skill with which knots may be

picked, locks unfastened, and the other devices by which security

may be simulated. The chief interest in such performances is the

historical one, for these have done perhaps more than anything else

to convince believers of the truth of Spiritualism. Here, where

everything depends upon the security of the fastenings (for once

free, the medium can produce messages from the spirit-land limited

only by his ingenuity and boldness), upon the particular moment

when the examination was permitted or the light turned down, upon

the success with which an appearance of security and intactness

of seals and knots may be simulated, it might be supposed that

all possible precautions had been taken to control and eliminate

these possibilities; while, as a matter of fact, the laxity of most

investigators in this regard is well known. These performances

deceive because people overlook the technical acquisitions needed

to pronounce upon the possibility or impossibility of a fastening

having been tampered with and apparently restored without detection.

If manufacturers of safes were equally credulous, and gave equally

little time to the study of the security of locks, "safe" would be an

ironical expression indeed.

Passing next to the most interesting of spiritualistic

manifestations, those in which self-deception comes to the

foreground, I need hardly dwell at length upon the tilting of

tables, the production of raps by movements of which the sitters are

unconscious; for these have been so often and so ably presented that

they must now be well understood. Suffice it to say that it has been

objectively proven that it is almost impossible not to give some

indication of one's thoughts, when put upon the strain; and that

under excitement, these indications may become palpably plain and yet

remain unperceived by the individual who gives them. The extreme

subtlety of these indications is met by the unusual skill of the

professional mind-reader, who takes his clue from indications which

his subject is "absolutely confident he did not give." The assurances

of sitters that _they know_ they did not move the table are equally

valueless; and nothing but objective tests will suffice. The most

wholesome lesson to be derived from the study of these phenomena

is the proof that not all our intentions and actions are under

the control of consciousness, and that, under emotional or other

excitement, the value of the testimony of consciousness is very much

weakened. Again, it is almost impossible to realize the difficulty

of accurately describing a phenomenon lying outside the common range

of observation. Not alone that the knowledge necessary to pronounce

such and such a phenomenon impossible of performance by conjuring

methods is absent, but with due modesty and most sincere intentions

the readiness with which the observing powers and the memory play

one false is overlooked. In the investigation of Mr. Davey, above

referred to, the sitters prepared accounts of the "slate-writing"

manifestations they had witnessed, and described marvels that had

not occurred, but which they were convinced they had seen--messages

written on slates utterly inaccessible to Mr. Davey, and upon slates

which they had noticed a moment before were clean. The witnesses are

honest; how do these mistakes arise? Simply a detail omitted here, an

event out of place there, an unconscious insertion in one place, an

undue importance given to a certain point in another place--nothing

of which any one needs feel ashamed, something which it requires

unusual training and natural gifts to avoid. The mistake lies in not

recognizing our liability to such error.

If, however, the spectator is once convinced that he has evidence

of the supernatural, he soon sees it in every accident and incident

of the performance. Not only that he overlooks natural physical

explanations, but he is led to create marvels by the very ardor of

his sincerity. At a materializing séance the believer recognizes

a dear friend in a carelessly arranged drapery seen in a dim

light. Conclusive evidence of the subjective character of such

perceptions is furnished by the fact that the same appearance

is frequently recognized by different sitters as the spiritual

counterpart of entirely different and totally dissimilar persons. A

"spirit-photograph" is declared to be the precise image of entirely

unlike individuals. In the "Revelations of a Spirit Medium," we

read that a wire gauze mask placed in front of a handkerchief,

made luminous by phosphorus, and projected through the opening

of the cabinet, was "recognized by dozens of persons as fathers,

mothers, sisters, brothers, cousins, sweethearts, wives, husbands,

and various other relatives and friends." Each one sees what he

expects to see, what appeals to his interests the most intensely.

What the unprejudiced observer recognizes as the flimsily disguised

form of the medium, the believer transforms into the object of his

thoughts and longings. Only let the form be vague enough, the light

dim enough, the emotions upon a sufficient strain, and that part of

perception in which the external image is deficient will be readily

supplied by the subjective tendencies of each individual. In the

presence of such a mental attitude the possibilities of deception

are endless; the performer grows bolder as his victim passes from

a watchful, critical attitude to one of easy conviction, and we

get scientific proofs of the fourth dimension of space, of the

possibility of matter passing through matter, of the levitation or

elongation of the medium's body, of the transcendence of the laws of

gravity. And the same performance that convinced Professor Zoellner

of the reality of the fourth dimension of space would prove to the

spiritualist the intercourse with deceased friends, would convince

the theosophist of the flight of the performer's astral body; and,

it may not be irrelevant to add, it was the same type of performance

that served and yet serves to terrify the minds of uncultivated and

superstitious savages. All depends not upon what is done, but upon

the mental disposition of the spectator. Little by little, through

neglect, through mal-observation and lapses of memory, through an

unwillingness to mistrust the reports of an excited consciousness,

caution is abandoned and credulity enters. Mediums are actually seen

flying out of one window and in through another. The wildest and

most far-fetched fantastic explanation is preferred above a simple

one; the bounds of the normal are passed; real hallucinations set

in; conduct becomes irrational, and a state hardly distinguishable

from insanity ensues. If this seems improbable, turn to the records

of witchcraft persecutions and read upon what trifling and wholly

imaginary evidence thousands of innocent lives were sacrificed; and

this not by ignorant, bloodthirsty men, but by earnest, eminent, and

religious leaders. A child is taken sick, is remembered to have been

fondled by an old woman; therefore the woman has put the child under

a spell and must be burned. A man sees an old woman in the woods,

and, on turning about, the old woman is gone and a hare flies across

his track; he concludes that she turned herself into a hare, and the

witch test is applied. When the personal devil was believed in, he

was seen daily clothed in the garments that imagination had given

him, and engaged in mischief and villainy of all kinds. When witchery

was the dominant superstition, all things gave evidence of that. So

long as Spiritualism forms a prominent cult with a real hold upon the

beliefs of its adherents, the number of mediums and manifestations

will be correspondingly abundant. Create a belief in the theory, and

the facts will create themselves.

V

In the production of this state of mind a factor as yet unmentioned

plays a leading rôle, the power of mental contagion. Error, like

truth, flourishes in crowds. At the hearth of sympathy each finds

a home. The fanatical lead, the saner follow. When a person of

nervous temperament, not strongly independent in thought and action,

enters a spiritualistic circle, where he is constantly surrounded

by confident believers, all eager to have him share their sacred

visions and profound revelations, where the atmosphere is replete

with miracles, and every chair and table may at any instant be

transformed into a proof of the supernatural, is it strange that

he soon becomes affected by the contagion of belief that surrounds

him? He succumbs to its influence imperceptibly and hesitatingly at

first, and perhaps yet restorable to his former modes of thought by

the fresh air of another and more steadfast mental intercourse, but

more and more certainly and ardently convinced the longer he breathes

the séance atmosphere. No form of contagion is so insidious in its

onset, so difficult to check in its advance, so certain to leave

germs that may at any moment reveal their pernicious power, as a

mental contagion--the contagion of fear, of panic, of fanaticism, of

lawlessness, of superstition, of error. The story of the witchcraft

persecutions, were there no similar records to deface the pages of

history, would suffice as a standing illustration of the overwhelming

power of psychic contagion. To illustrate with any completeness its

importance in the production of deception or in the dissemination

of error, would carry us beyond the proper limits of the present

discussion. It enters at every stage of the process and in every

type of illusion. Although it has least effect when deception is

carried on by external arrangements, by skilful counterfeits of

logical inferences, yet even then it enters into the distinction

between a critical, skeptical, and irresponsive body of spectators,

and one that is sympathetic, acquiescent, and cordial; it renders it

easier to effect bold and striking impressions with a larger audience

than with a smaller one; its power is greatest, however, where the

subjective factor in deception is greatest, more particularly in such

forms of deception as have been last described.

In brief, we must add to the many factors which contribute to

deception the recognized lowering of critical ability, of the power

of accurate observation, indeed of rationality, which merely being

one of a crowd induces. The conjurer finds it easier to perform to

large audiences because, among other reasons, it is easier to arouse

their admiration and sympathy, easier to make them forget themselves

and enter into the uncritical spirit of wonderland. It would seem

that in some respects the critical tone of an assembly, like the

strength of a chain, is that of its weakest member. "The mental

quality of the individuals in a crowd," says M. Le Bon, "is without

importance. From the moment that they are in the crowd the ignorant

and the learned are equally incapable of observation."

Fact and Fable in Psychology · 第 72 / 119 题