According to social tradition, sexual activity (at least in the case of women) is to be exercised primarily for the reproduction of the group. Thus the institutions of marriage and the family in their present form provide only for the woman who possesses both the sexual and maternal cravings. Contraceptive knowledge has enabled a small number of women (which is rapidly growing larger) to fit into these institutions in spite of their lack of a desire for motherhood. There have been a few hardy theorists who have braved convention to the extent of suggesting the deliberate adoption of unmarried motherhood by women who are consumed by the maternal passion but have no strongly erotic nature. Whether their problem will be solved in this manner, only the course of social evolution in the future can show.

Besides the differences in natural instinctive tendencies which make it difficult for many women to fit into a uniform type of sexual relationship, modern society, with its less rigid natural selection, has permitted the survival of many neurotic temperaments which find marriage a precarious venture. The neurotic constitution, as Adler[[1,][2]] has pointed out, is an expression of underlying structural or functional organic deficiency. It is a physiological axiom that whenever one organ of the body, because of injury, disease, etc., becomes incapable of properly discharging its functions, its duties are taken over by some other organ or group of organs. This process of organic compensation, whereby deficiency in one part of the body is atoned for by additional labours of other parts, necessarily involves the nervous mechanism in ways which need not be discussed in detail here.

In children the process of compensation, with its formation of new nervous co-ordinations, is manifest in the inability to cope with their companions who have a better biological endowment. This gives rise to a feeling of inferiority from which the child tries to free itself by every possible means, ordinarily by surpassing in the classroom the playmates whom it cannot defeat on the playground. The feeling of inferiority continues throughout life, however, although the mechanism of physiological compensation may have become so perfected that the functioning of the organism is quite adequate to the needs of the environment. As a result, the ruling motive of the conduct becomes the desire to release the personality from this torturing sense of inability by a constant demonstration of the power to control circumstances or to dominate associates.

This abnormal will to power finds expression in the marital relationship in the desire for supremacy over the mate. The domineering husband is a familiar figure in daily life. The wife who finds it more difficult to rule her husband by sheer mastery achieves the same ends by developing a fit of hysterical weeping or having a nervous headache when denied her own way in family affairs.

By far the easiest way for the woman to satisfy her craving for power is the development of an interesting illness which makes her the centre of attention. The history of nervous disease furnishes many cases of neurosis where this uncontrollable longing for domination is the chief factor in the etiology of the illness. It is not at all unusual to meet wives who hold their husbands subservient to every whim because of "delicate nervous organizations" which are upset at the slightest thwarting of their wishes so that they develop nervous headaches, nervous indigestion, and many other kinds of sickness unless their preferences meet with the utmost consideration. This tendency often becomes a chronic invalidism, which, at the same time that it brings the longed-for attention, incapacitates the individual for sexual and maternal activities and makes the married life an abnormal and unhappy one.

Another more or less neurotic trait which acts as a cause of disharmony in the marital relationship is the sexual anæsthesia which is not at all uncommon in modern women. The absence of any erotic passion is held to be a matter of physiological makeup by many authorities, but it is probably more often due to the inhibition of natural tendencies in accordance with concepts built up by social tradition. In order to understand how social suggestion can have so powerful an effect upon the reactions of the individual, we must revert once more to the principles of behaviouristic psychology.

According to Watson,[[4]] whenever the environmental factors are such that a direct expression of an emotion cannot occur, the individual has to have recourse to implicit motor attitudes. The best example in everyday life is probably seen in the case of anger, which can seldom be permitted to find an outlet in the natural act of striking, etc. It is apparent, however, in the facial expression and in a certain muscular posture which can best be described as a "defiant" attitude. Another good example is the submissive attitude which often accompanies the emotion of fear. It is manifest in shrinking, avoiding movements, sometimes of the whole body, but more often of the eyes or some other special organ.

"In the sphere of love," Watson remarks, "there are numerous attitudes as shown by the popular expressions lovelorn, lovesick, tenderness, sympathy. More fundamental and prominent attitudes are those of shyness, shame, embarrassment, jealousy, envy, hate, pride, suspicion, resentment, anguish, and anxiety."[[4]]

The significant fact is that these attitudes function by limiting the range of stimuli to which the person is sensitive. The attitude of shame concerning their sexual functions, which has been impressed upon women as a result of ages of thinking in harmony with taboo standards, thus is able to prevent the normal biological response to a situation which should call out the emotions of love. In women who have an unstable nervous system this shameful feeling often results in a definite physiological shrinking from the physical manifestations of sexuality and renders the individual insensitive to all erotic stimulation.

This attitude of shame in connection with the love life came into existence as a socially conditioned emotional reaction set up under the influence of the traditional ideal of the "model woman" who was pictured as a being of unearthly purity and immaculacy. It has been passed on from generation to generation through an unconscious conditioning of the daughter's attitude by suggestion and imitation to resemble that of the mother. Thus it happens that although an increasing amount of liberty, both social and economic, and a more rational and scientific understanding of the womanly nature, have quite revoked this ideal in theory, in actual practice it still continues to exert its inhibitory and restrictive influence.