Popular Science Monthly/Volume 32/January 1888/The Psychology of Joking
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The Psychology of Joking
By John Hughlings Jackson
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By J. HUGHLINGS JACKSON, M.D., F.R.S.
PUNNING, I think, does not receive enough attention. In spite of Dr. Johnson's well-known dictum, we should not despise punning. Sydney Smith says that it is the foundation of all wit. Supposing three degrees of evolution, I submit that punning is the least evolved system of joking, that wit is evolved out of punning, and that humor is evolved out of wit. Everybody has heard of Sydney Smith's remark — that it requires a surgical operation to get a joke into the head of a Scotchman. But he spoke without distinguishing. The Scotch have a great appreciation of those highly-evolved jocosities displaying the humorous, although, no doubt, a scorn of simple, lowly-evolved jocosities, such as plays on words. It is difficult to form a conception of a Scotch punster. Yet I have heard an Aberdonian, a physician of world-wide reputation, make a pun.
Punning is well worthy of the psychologist's attention. I seriously mean that the analysis of puns is a simple way of beginning the methodical analysis of the process of normal and abnormal mentation. This, I think, I can easily show. Vision is stereoscopic: in a sense it is slightly diplopic, for there are two dissimilar images, although there seems to be but one external object, as we call it. To borrow the ophthalmological term, we can say that mentation is "stereoscopic"; always subject-object, although we often speak of it as single ("states of consciousness," etc.). Just as there is visual diplopia, so there is "mental diplopia," or, as it is commonly called, "double consciousness." Now I come back to punning. We all have "mental diplopia " when hearing the answer to a riddle which depends on a pun — "When is a little girl not a little girl?" Answer: "When she is a little horse (hoarse)." The feeble amusement we have in the slightly morbid mental state thus induced is from the incongruous elements of a "mental diplopia." The word "hoarse" rouses in us the idea of a little girl who has taken cold, and the same-sounding word "horse" rouses in us the idea of a well-known quadruped at the same time. We have the sensation of complete resemblance with the sense of vast difference. Here is, I submit, a caricature of the normal process of all mentation. The process of all thought is "stereoscopic" or "diplopic," being the tracing of relations of likeness and unlikeness.
To call punning a slightly morbid mental state may be taken as a small joke, but I do not think it very extravagant to describe it so; it certainly is not if it be a caricature of normal mentation. A miser has been defined as an amateur pauper; the habitual drunkard is certainly an amateur lunatic; and in the same style of speaking we may say that — well, we will say that punning is playing at being foolish; it is 328 THE POPULAR SCIENCE MONTHLY.
only morbid in that slender sense. The word " play " carries us for- ward in a slightly different direction. Jocosities of all degrees of evo- lution — (1) puns, (2) witticisms, and (3) humorous statements — are the " play of mind " ; play in the sense in which the word has been used in the remark that the " aesthetic sentiments originate from the play impulse." A further definition of play as thus used is given in the fol- lowing quotation from Spencer : " The activities we call play arc united with aesthetic activities by the trait that neither subsei^ve, in any direct way, the processes conducive to life." * There would be a great intel- lectual advance — due, I presume, to internal evolution — wheu man be- gan to value things for their beauty apart from their use, one sign of his having "got above " his mere animal self. For it showed that, over and above mind required for mere animal existence, he had some surplus mind for greater ends of life. So I contend that our race owes some respect to the first punster. For the dawn of a sense of the merely ridiculous, as in punning and the simpfest jokes, shows the same thing as the dawn of aesthetic feeling — surplus mind, something over and above that required for getting food and for mere animal in- dulgence. All the more so if punning be that out of which wit and humor are evolved. It is not a good sign if a man be deficient in hu- mor, unless he have compensation, as Wordsworth had, in a sense of the sublime, or in great artistic feeling, or in metaphysical subtlety. The man who has no sense of humor, who takes things to be literally as distinct as they superficially appear, does not see fundamental simi- larities in the midst of great superficial dijffercnces, overlooks the tran- sitions between great contrasts. I do not mean because he has no sense of humor, but because he has not the surplus intellect which sense of humor implies. Humor, being the "play" of mind, is tracing deep, fanciful resemblances in things known to be very different. This is "playing" at generalization, and is only a caricature of the same kind of process which made Goethe declare that a skull is a modified part of a vertebral column,
Kow I am about — not really digressing from what I have just said — to say something which sounds very paradoxical : that jjcrsons who are deficient in appreciation of jocosities in their degrees of evolution, are in corresponding degrees deficiently realistic in their scientific con- ceptions. One would infer this a joriori. Every child knows that a man bom blind has no idea of light ; but the educated adult knows, too, that the congenitally blind have no notion of darkness. And I think that observation confirms what a priori seems likely — that pari passu with the evolution of the sentiment of jocosity (playing at un- reality) is the evolution of power of realistic scientific conception — from sense of the merely ridiculous with parallel realistic conception of simple things, up to sense of humor with parallel realistic concep- tion of complex things. But we must be on our guard not to take
- " Principles of Psychology," vol. ii, p. 627.
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commonplace realism about simple tbiugs to be realism when applied to very complex things. It seems at first glance more realistic to sup- pose that sourness is inherent in vinegar than that it is always a sensa- tion in some percipient. But that the former hypothesis is very un- realistic is easily seen when we put such crude metaphysics in other Avords ; the doctrine then is that part of the taster's own mind is out- side himself. It is possible for the same person to be truly realistic in simple things, and to be intensely unrealistic in complex things. Thus, the really practical man, who may tell us that he despises metaphysics, may be crudely metaphysical when he deals with complex things — "explaining," for example, that a man comatose does not move be- cause he has lost consciousness. Surely the truly realistic conception is that the comatose patient does not move any of his limbs from some physical disability — for essentially the same reason that a hemiplegic man does not move his arm and log.
I now go back to my small joke chat punning is a slightly morbid mental state, a " mental diplopia," a caricature of the normal " diplopia " of healthy mentation. From this point I make the assertion that the "physiological insanity" of dreaming is diplopic — a caricature of that of waking mentation. A physician reads in the day of the strained re- lations of European states ; in his dream at night he is called in con- sultation by Bismarck, and advises a course of the iodide of potassium (directions for the application of the remedy were not given). Clearly, there are here two very dissimilar mental states "pretending" to be stereoscopic ; manifestly a seeming fusion of ideas of prescribing for a patient with ideas of the attitude of European states. I hope some time to be able to show that such diplopia has the same kind of mechan- ism as that of the pun — that the two elaborate dissimilar states are held together by two same, or similar, simple mental states. I go on to re- mark that in some people there are beliefs as incongruously diplopic as some states in dreams — diplopic in that way to other people, at any rate : — (1). Killing a rabid dog to prevent people already bitten by it going mad. (2). Imagining it to be possible to study what are called " diseases of the mind " methodically without distinguishing between the physical and the psychical. (3). A cleanly mother, from maternal solicitude, refraining from washing the top of her baby's head, lest it should come to have " water on the brain." (4). Imagining it to be possible to investigate complex subjects without the use of hypotheses ; for instance, that Harvey could have made observations and experi- ments to prove the circulation of the blood without sirpposing before- hand that it did circulate, (.5). Anointing a blade with healing salve to cure a wound inflicted by the blade.
Once more I go back to punning for a new start, trying to show again by very simple cases that punning is only a caricature of, and therefore for the psychologist a valuable experiment on, the process of normal mentation. I take first a case which is almost if not quite a
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pun, but one made unwittingly. "What is called the inelegance of using the same word in one sentence, or in two consecutive sentences, causes mental diplopia. For even if each of the two words has the same dictionary meaning, we must bear in mind that a word loses something of that kind of meaning when forming part of a propo- sition, losing and taking meaning by and from its context. Hence the second time the word comes there is a faint revival of the ideas it sym- bolized when used the first time, along with a vivid revival of other ideas it now symbolizes ; there is trivial confusion from slight mental diplopia, like that from an ill-understood pun. I now give a more striking example — one in which there is manifest dijjlopia without confusion.
A smell, say of roses, I now have makes me think of a room where I passed much of my time when a child. Here clearly is " mental di- plopia," and the mechanism of it is quite similar to that of the pun, making allowance for caricature in the latter. For the true process is that the smell of roses, now having, develops what we call the same smell, but really another smell, that of roses once had, in the old room. The two scents, linked together, hold together two dissimilar mental states (1) present, now narrowed, surroundings, and (2) certain vague quasi-former surroundings. When the scent of ha}^, or the caw of rooks, rouses in us vague pleasurable feelings, the mechanism is of the same kind, but the process is more complex. To further insist on the fact that mentation is stereoscopic, with more or less manifest diplopia, I give an example of mentation which is exceedingly common. "While writing I suddenly think of York Minster. Here is manifest mental diplopia (1) narrowed consciousness of my present surroundings, with (2) cropping-up of consciousness of some quasi-former surroundings. Of course something, whether I can mentally seize it or not, in my present surroundings, has developed a similar something associated with York surroundings.
Recapitulating, I can say that the process of all thought is double, in degrees from a stereoscopic unity of subject and object to manifest diplopia (two objective states for one subject). The process of all thought is tracing relations of resemblance and difference, from sim- plest perception — to say what a thing is, is to say what it is like and unlike — up to most complex abstract reasoning. The formula of the caricature of the normal process of thought is the " pretense" of some resemblance between things vastly different — from punning, where the pretended resemblances and real differences are of a simple order, up to humor, where both are highly compound. We have the " play " of mind in three degrees of evolution, three stages of increasingly com- plex incongruousnesses.
If I had time, I could, I think, show that this address on jokes is not itself merely one big poor joke, but that what has been said applies closely to the study of "mental symptoms" in serious diseases. I
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should begin the new stage of the inquiry with the quasi-healthy feel- ing of "reminiscence," clearly an element in a mental diplopia. For my task would be an endeavor to show that all morbid mental states are departures from normal (stereoscopic) mental states in particular ways — that, for example, the process of mentation in the maniac is but a caricature of stereoscopic and diplopic mentation in healthy people. Thus, the reminiscence, although it is almost pedantic to call it mor- bid, is really a link between perfectly normal and decidedly abnormal mentation. For reminiscence occurs in slight attacks of a certain va- riety of epilepsy, as do other voluminous mental states ("intellectual aurae ") : I call them all " dreamy states." These cases I should take next. There is clearly in them morbid mental diplopia, and yet this is traceably only a gross caricature of normal mental diplopia, being linked on to it by the reminiscence occurring in people we call healthy. And I think we may show that it has the same mechanism that puns have. Next, taking these miniature and transient cases of insanity, and other cases commonly called insanity, I should try to show that the comparison of mentation with vision is of direct value. In the symptomatology of a patient who has paralysis of an ocular muscle there are many elements. There is morbid visual diplopia ; in in- sanity there is morbid mental diplopia. The ophthalmologist's "true" and " false " images have their analogues in the " true " and " false " mental states in the cases of epilepsy mentioned. In the former, when the divergence of the eyes is slight, there is more visual con- fusion ; in the latter, when the dissolution of the highest centers is shallow, there is more mental confusion. In the former, when the divergence is great, diplopia ceases (the patient, the ophthalmolo- gist says, "neglects" the false image) ; in cases of epilepsy, upon deeper dissolution than that with which there is the "dreamy state," the actions are considerably coherent. The " erroneous projections " of the former have their clear analogues in the hallucinations of many cases of insanity. Believing that all diseases are to be looked on as flaws in different parts of one evolutionary system, I urge the " Com- parative Study of Diseases of the Nervous System." I submit that, recognizing the enormous difference between insanity and ocular paral- ysis, a profitable comparison and contrast may, nevertheless, be made, which will further a better knowledge of both. I do not mean simply that ocular paralysis may be taken as an illustration to simplify ex- planation of a case of insanity, but also that, both being examples of dissolution, the very same principles are displayed in each. — Lancet.
��The Bishop of Manchester preached recently that the criticisms of men of science had induced Christians to modify some of their old views derived from the Bible. A closer study of the book showed that there had been evolution in rehgion — a gradual and orderly development by which people were led to the truth as they could bear it.