"I was once summoned to visit a lady who was represented as being very ill. On my arrival I was shown to the so-called sick-room, where three persons were present—an old lady, her daughter, and the daughter's husband. All of them seemed in good health. When I inquired which was my patient, there was silence for a moment. Then the daughter said:
"'I am the patient, and my complaint is jealousy. I am jealous of my husband, and if you do not give me something to relieve me I shall go out of my mind.'
"This, on the face of it, seemed preposterous. She was a tall, fair, beautiful woman of about thirty. The husband, on the contrary, was several years older, a short, swarthy, plain man. It seemed to me more reasonable to suppose that he might have cause to be jealous of his wife, rather than she of him. But she persisted in her statement, and declared that she had good reason to feel jealous.
"The husband insisted he had done nothing to justify her jealousy. She reasserted he had. In the midst of an outburst, distressing to listen to, she fell into a queer fit. With rhythmic regularity, she went through various spasmodic convulsions. At one moment she would stand at full length, her body arched forward. The next instant she was in a sitting position, with her legs drawn up, her hands clutching her throat, and a guttural noise coming from her mouth. Then she would wildly throw her arms and legs around; after which she would rise to go through the same performance.
"It was necessary to give her a drug to quiet her. I learned that she had been subject to these attacks ever since she began to feel jealous of her husband. Inquiring more closely, I found that, quite without reason, she was specifically jealous of him in connection with a certain woman in the small town where he carried on his business. Thereupon I advised him, for the sake of her health and his own peace of mind, to remove to another town. This having been done, her jealousy abated and the convulsive seizures ceased."
Of course, this mode of treatment—if treatment it should be called—gave no guarantee that the jealousy and the consequent convulsions would not recur under other circumstances. What the jealous wife really needed was psychical re-education to give her a saner philosophy of life, enabling her to get a better grip on her emotions, and, through this, to control better the workings of her nervous system. Here we touch on what is far and away the most important fact in the problem of jealousy—a fact unappreciated by too many parents, and, for that matter, likewise unappreciated by most writers on the pedagogy of childhood.
This fact is that jealousy, being always an evidence of uncontrollable emotionality, and itself serving still further to weaken emotional control, may, and often does, give rise to functional mental and nervous troubles. These may appear during childhood, or their appearance may be postponed until adult life, as in the instance cited above. In either event, their underlying cause is always the same: failure to train the individual during early life to react with calmness, courage, and moderation to the stresses of existence.
In the case of a person of naturally phlegmatic nervous constitution, lack of such training does not do so much harm, for the reason that excessive emotional reactions are unlikely to occur, no matter what the provocation. But when there is any marked degree of sensitiveness in the nervous organisation—as there usually is in our land: Americans being conspicuously of the so-called nervous temperament—the need for training in emotional control becomes imperative. In the case of persons who have inherited any tendency to nervous ailments, persons burdened with what is technically known as a neuropathic diathesis, absence of this training may be disastrous.
Parents, accordingly, will make no mistake in regarding any persistent manifestation of jealousy in their children as—like sulkiness—a danger-signal of real urgency and as indicating a special need for careful upbringing. Also, they should not be surprised if jealousy begins to show itself at an extremely early age. Some instances are on record of its appearance before the end of the first year. The naturalist Darwin noted its presence in his son at the age of fifteen and a half months. Arnold L. Gesell, one of the few scientists to make any extended research of jealousy, found that "infants will variously hold out their arms, fret, whine, or burst into violent crying, cover their face with their hands, or sulk, when their mothers caress or hold another baby." From the end of the second year jealousy is much in evidence, and is most variously motivated.