Perversion of the sexual instinct, as will be seen from what follows, is not to be confounded with perversity in the sexual act; since the latter may be induced by conditions which are not psychopathology. The concrete perverse act, monstrous as it may be, is not decisive. In order to differentiate between disease (perversion) and vice (perversity), one must investigate the whole personality of the individual and the original impulse leading to the perverse act. Therein will be found the key of diagnosis (v. infra).
Paræsthesia may occur in combination with hyperæsthesia. This association seems to be frequent clinically. Sexual acts are then confidently to be expected. The perverse direction of sexual activity may be toward sexual satisfaction with the opposite or the same sex. Thus two great groups of perversions of the sexual life may be distinguished.
1. Sexual Inclination toward Persons of the Opposite Sex, with Perverse Activity of the Instinct.
1. Association of Active Cruelty and Violence with Lust—Sadism.[[40]]—That lust and cruelty frequently occur together is a fact that has long been recognized and not infrequently observed. Writers of all kinds have called attention to this phenomenon.[[41]] The not infrequent cases where individuals of very excitable sexual natures bite or scratch the companion in intercourse fall within physiological limits.[[42]] The older authors have called attention to the relation between lust and cruelty.
Blumröder (“Ueber Irresein,” Leipzig, 1836, p. 51) saw a man who had several wounds bitten into the pectoral muscle, which a woman, in great sexual excitement, had given him at the acme of lustful feeling during coitus. Blumröder (“Ueber Lust und Schmerz,” Friedreich’s Magazin für Seelenkunde, 1830, ii, 5) calls especial attention to the psychological connection between lust and murder. In relation to this, he especially refers to the Indian myths of Siva and Durga (Death and Lust); to human sacrifice with sensual mysteries; and to sexual instinct at puberty with a lustful impulse to suicide, with whipping, pinching, and pricking of the genitals, in the blind impulse to satisfy sexual desire. Lombroso (“Verzeni e Agnoletti,” Rome, 1874) also cites numerous examples of the occurrence of a desire to murder with greatly increased lust.
On the other hand, when murderous lust has been excited, lust itself often follows. Lombroso (op. cit.) alludes to the fact, mentioned by Mantegazza, that, with fear of being plundered by bandits, there was always a dread of brutal lust.[[43]] These examples form transitions to the pronounced pathological cases.
The examples of the degenerate Cæsars (Nero, Tiberius) are also instructive. They took delight in having youths and maidens slaughtered before their eyes. Not less so is the history of that monster, Marschalls Gilles de Rays (Jacob, “Curiosités de l’histoire de France,” Paris, 1858), who was executed in 1440, on account of mutilation and murder, which he had practiced for eight years on more than eight hundred children. As the monster confessed it, it was from reading Suetonius and the descriptions of the orgies of Tiberius, Caracalla, etc., that the idea was gained of locking children in his castles, torturing them, and then killing them. This inhuman wretch confessed that in the commission of these acts he enjoyed inexpressible pleasure. He had two assistants. The bodies of the unfortunate children were burned, and only a number of heads of particularly beautiful children were preserved—as memorials.
In an attempt to explain the association of lust and cruelty, it is necessary to return to a consideration of the quasi-physiological cases, in which, at the moment of most intense lust, very excitable individuals, who are otherwise normal, commit such acts as biting and scratching, which are usually the result of anger. It must further be remembered that love and anger are not only the most intense emotions, but also the only two forms of active (sthenic) emotion. Both seek their object, try to possess themselves of it, and naturally exhaust themselves in a physical effect on it; both throw the psycho-motor sphere into the most intense excitement, and thus, by means of this excitation, reach their normal expression.
From this stand-point it is clear how lust impels to acts that otherwise are expressive of anger.[[44]] The one, like the other, is a state of exaltation, an intense excitation of the whole psycho-motor sphere. Thus there arises an impulse to react on the object that induces the stimulus, in every possible way, and with the greatest intensity. Just as maniacal exaltation easily passes to furibund destructiveness, exaltation of the sexual emotion often induces an impulse to expend itself in senseless and apparently harmful acts. To a certain extent these are psychical accompaniments; but it is not simply an unconscious excitation of innervation of muscles (which also sometimes occurs as blind violence); it is a true hyperbulia, a desire to exert the most intense effect on the individual giving rise to the stimulus. The most intense means, however, is the infliction of pain.
Through such cases of infliction of pain, during the most intense emotion of lust, we approach the cases in which a real injury, wound, or death, is inflicted on the victim.[[45]] In these cases, the impulse to cruelty, which may accompany the emotion of lust, becomes unbounded in a psychopathic individual; and, at the same time, owing to defect of moral feeling, all normal inhibitory ideas are absent or weakened. Such monstrous, sadistic acts have, however, in men, in whom they are much more frequent than in women, another source in physiological conditions. In the intercourse of the sexes, the active or aggressive rôle belongs to man; woman remains passive, defensive.[[46]] It affords a man great pleasure to win a woman, to conquer her; and in the ars amandi, the modesty of a woman who keeps herself on the defensive until the moment of surrender, is an element of great psychological significance and importance. Under normal conditions a man meets obstacles which it is his part to overcome, and for which nature has given him an aggressive character. This aggressive character, however, under pathological conditions, may likewise be excessively developed, and express itself in an impulse to subdue absolutely the object of desire, even to destroy or kill it.[[47]][[48]]