So much attention has recently been directed to the subject of secondary personality by the startling phenomena described in numerous books and articles on the subject, that a certain class of "nervous" patients have permitted themselves to be influenced by the auto-suggestion, flattering the vanity, that they, too, have a secondary personality. They even do not hesitate to hint that this condition is responsible for many of the failures on {148} their part to do what they ought to do, or at least what they think they would like to do; but self-control and self-discipline require such constant attention and effort that they fail. Even when these patients have not quite reached the persuasion of a complete secondary personality, they at least think that the subconscious (or their subliminal self) plays a large role in their conduct. As a consequence, they assert, it is more or less beyond their power to control themselves, and their responsibility for certain acts is surely somewhat impaired. This is a rather satisfying doctrine for those who do not feel quite equal to the effort of conquering vicious or unfortunate tendencies. Those who like to have some excuse for self-indulgence take refuge in this supposedly scientific explanation to absolve them from blame, and from the necessity of self-control. The drug habituÉ, the inebriate, the victim of other habits, sometimes hug this flattering invention to their souls, especially when they are of the class who delight in the study of the abnormal. Reform becomes well-nigh impossible as long as such an auto-suggestion of inherent weakness and lack of will-power is at work.

The Other Self.—From the beginning of written history, man has always been inclined to find some scapegoat for his failings. The story of Adam blaming the first fault on the woman and the woman blaming it on the serpent, is a lively symbol of what their descendants have been doing ever since. The less personal the blame is, the better, and the more it can be foisted over on some inevitable condition of human nature, the more generally satisfying it is. A secondary personality can scarcely resent being blamed for its acts by the primary personality to which it is attached, and so the field of auto-suggestion as to the blameless inevitability of certain acts is likely to widen if it is given a quasi-scientific basis. Long ago St. Paul spoke of the law in his members opposed to the higher authority, and declared that the things he would do he did not, while what he would not do he sometimes did. There is no doubt that there are two natures in the curious personality of man. Everyone at times has the uncanny feeling that there is something within almost apart from himself, leading him in ways that he does not quite understand. Usually the leading is away from what is considered best in us. But those who have dwelt much on the better side of man and have tried to climb above mere selfish aims, have realized that there is also a power within them leading to higher paths. Indeed, some of the greatest thoughts that men think, and the resolves that lift them up to heroic heights, are apparently so far beyond ordinary human powers, that the hero and the poet and even the more ordinary literary man, is quite ready to proclaim inspiration as the source of his best ideas—as if they were breathed into him from without and above.

Personal Responsibility.—For ordinary normal individuals, this question of secondary personality has scant interest. Normal persons go about their work realizing that what they want to do, they may do, and what they do not want to do they can keep from doing, unless some contrary physical force intervenes. There are many metaphysical arguments for free will, but none of them is so convincing as the observation that every sane man, with regard to his own actions, has the power to choose between two things that attract him. He may be much drawn to one thing, yet choose another. He may allow himself to be ruled by baser motives; he may sternly follow the {149} dictates of reason, or he may do neither and hold himself inactive. In any case, he realizes his power to choose. While this power may be impaired by many external conditions, his consciousness of its actuality makes him appreciate his responsibility. He realizes that punishment for wrong done is not only a part of the law, but it is also a proper vindication of that consciousness of free will which all men have, and which does not deceive them. The question has been obscured by much talk, but the reality is there, and the common-sense of mankind has proclaimed its truth. All our laws are founded on it. Without it punishment as meted out is an awful injustice and crime is a misnomer.

Hysterical Phenomena.—Most of the cases of secondary personality that have been discussed at greatest length have been in persons who were as desirous of attracting attention, and as pleased over being the subject of special study as were the hysterical patients who used to delight in investigation two generations ago. That most of the phenomena of so-called dual personalities are mainly hysterical seems now to be clear. In a few cases, where the patient has found that the existence of a double personality was of special interest, a definite tendency to the formation of further personalities has been noted. Some triple personalities have been discussed and, in a few cases, a group of personalities, even up to five or more, began to assert themselves. This reductio ad absurdum, of the hypothesis of supernumerary personality has revealed the real hysteric character of the phenomena.

The whole story of secondary personality in recent years vividly recalls commonplaces in the older medical literature that gathered around the study of hysteria, and that afford a striking confirmation of the conclusion as to the relation of the conditions ascribed to hysteria. Physicians of a generation or two ago who found their hysterical patients interesting, because of certain marvelous symptoms which they presented, were usually astonished to learn that their patients could, under suggestion, develop still further and more surprising symptoms. Each new visit, especially when other physicians were brought to see the patient, showed the existence of still further symptoms and revealed new depths of interesting disease. Indeed, the soil was found to be inexhaustible in its power to produce ever new and interesting crops of symptoms.

When the real significance of hysteria as a mental condition in which patients devoted themselves to the task of furnishing new symptoms for the physician began to be realized, one of the most potent objections against this explanation was that it would have been impossible for the patients to have studied out their symptoms enough to furnish the new material for study which physicians found so interesting. The patients were supposed to be mentally incapable of fooling the physicians. When, however, a person devotes entire attention to the one subject of making phenomena in themselves appear interesting to others, some very startling results are usually produced.

After having attracted the sensational attention so common with any novel observation and having been exaggerated out of all proportion to its due significance, the phenomenon is now settling down to its proper place—a rather obscure neurotic phenomenon of memory in hysteric individuals.

Other Neurotic Symptoms.—Janet's studies at the SalpetriÊre seem to show that the alterations of memory which bring about what we call {150} secondary personality (the forgetting of certain phases of existence and the maintenance for a time of a small portion of consciousness and memory quite apart from the rest) correspond with alterations in the physical basis of memory, that is, in the circulation to certain portions of the brain, and probably also in the modes of association of brain cells. They occur, particularly, in connection with certain phenomena of hystero-epilepsy so-called, or with the deeper forms of epilepsy in which there are various paresthesias, hyperesthesias and anesthesias as a consequence of a disturbance of the circulation in the central nervous system; and probably also of the connections made by neurons and the movements of neuroglia cells in making and breaking these connections. These alterations of memory are represented physically by such cases as those in which patients so lose their consciousness of sensation that they are unable to tell even where their feet are. As they themselves say, "they have lost their legs." In these cases, patients are often very deaf or have a limited auditory power, and their fields of vision are extremely narrowed. In most of these cases, recovery of the original personality takes place after hypnosis. This probably represents a relaxation of that short-circuiting, within the nervous system, which brought about the curious phenomenon studied as secondary personality.

Dual Dispositions.—The studies of secondary personality that we have had seem to show us persons under the influence of some strong suggestion, in what is practically a hypnotic condition. There are many similarities between the actions and the mentality of hypnotics and of those in secondary-personality conditions. The individuals are, for the moment, unable to recall what happened in other states. They may be very different in disposition, gentle and tractable in one state, but morose and difficult to get along with in another. Such differences are, however, only exaggerations of the variations of normal personality. There are times when, under the stress of circumstances, even the mildest of men and women become querulous and difficult. It is often noted that people are much more gentle and careful in their relations with some people than with others. Men who are known in their business relations to be quiet, easy to get along with, are at times bears in their homes. This is a matter of the exercise of inhibition for certain mental qualities, and this inhibition is neglected for some places and persons. An American humorist said not long since that a young girl passing a weekend at the house of a friend, should remember that she is expected to be unselfish, thoughtful for others, and ready to help her hostess to make it pleasant for others, so that the party may be successful. He adds that, of course, as soon as she returns home she should be perfectly natural again.

At least in a limited sense, all of us have buried in us secondary personalities that are due to a lack of control of ourselves, or occasionally to a lack of such initiative as makes possible the best that is in us. The secondary personality of some people, that side of their characters that their friends see only rarely, is the best side of them. Many people, under the demand of some great purpose, rise up to be really heroic in quality, yet in the commonplace relations of life they are quite ordinary. The secondary personality in either of these cases is not something abnormal. It is due to a tapping of deeper levels in personality than most people realize that they possess. When taken in connection with hypnotism and the power of suggestion over {151} susceptible individuals, these adumbrations of the deeper problem of secondary personality as the psychologists have discussed it, furnish the best data for its fuller explanation. Excuses for actions founded on secondary personality must either rest ultimately on insanity, or else on that lack of inhibition which constitutes the source of so many of our actions that we regret.

People who are susceptible to hypnotism may remember absolutely nothing of what occurs to them in the hypnotic condition, though they will recall it without any difficulty if during hypnosis it is suggested to them that they should remember it. This represents the most prominent feature of secondary personality; the individuals who are affected by it do not recall in one state of personality what happens to them in the other. In the two states they are very different in character. These differences have been much emphasized with regard to a few cases that are especially abnormal and have not attracted much attention in cases where the differences are slight. Indeed, in a number of the cases where secondary personality asserted itself, the differences in the character of the individual in the two states were practically nil. The only difference was a lapse of memory for certain important events. Considerations such as these help in the understanding and psychotherapy of what are sometimes puzzling cases of apparent dualism of disposition.

What we have to do with here are the suggestions of secondary personality which neurotic patients have been inclined to make to themselves as a consequence of the interest in the subject in recent years. The investigations of Head and of Gordon Holmes have undoubtedly shown, however, that there are true pathological conditions associated with certain definite and very marked manifestations of dualism of disposition consequent upon lesions in the optic thalamus. These cases so far as can be judged at the present time, at least, are quite rare and at most would account for duality and not for the plurality of personality that has come to be discussed by certain enthusiastic neurologists in recent years. The magnificent work done on this shows how much may yet be accomplished in the elucidation of nervous diseases by faithful study and investigation of selected cases.