Until the subject was brought up in a book of my own a year ago I had chanced never to see it mentioned in print or hear it referred to again by an author, editor or anybody else, yet during twenty years as an editor case after case has arisen in which ignorance of this simple phenomenon has proved a serious stumbling-block to a writer's progress. An author, for example, with vivid powers of imaginative visualization deems it a waste of words to describe what he believes every one will, on the mere mention, see as vividly and fully as he himself does, and as a result his stories when they reach his readers are not at all what he thought they were. To many his story-world is a mere land of ghosts moving in fog, without detail, color, individuality or reality. Another writer, himself lacking visual imagination, in the effort to put on paper a story-world capable of giving him a sense of reality uses so many brush-strokes that a large part of his readers, needing only a suggestion, are bored and read no more. A third writer, his own imagination insensitive to appeals to the senses of hearing, taste and smell, makes no such appeals in his writing and thereby fails to approximate full response from many readers. Another, with an imagination particularly sensitive to sound stimuli, gives to a story the appeal strongest to himself, neglects visual and other appeals and bores part of his audience with appeals that can not reach them while he gives to others not enough stimuli to keep them interested.

What, then, should be the general rule of procedure? There can't be any, but since readers vary so radically and fundamentally in ability to respond to sense appeals, any author, new or established, who in ignorance of this fact attempts to reach them on the theory that the responses of all of them are identical with his own is going to fall far short of his potential success as a writer. The following answers from more than a hundred writers will show that most of them are working without knowledge of this basic variation in imagination response of readers.

The part of the questionnaire bearing on imagination was designed to bring out (1) the differences of readers in natural ability to respond, (2) the resultant differences in effect upon readers of the presence, degree or absence of certain sets of stimuli in a story—in other words, the extent to which a story is dependent for success upon the use of such stimuli, (3) a general idea of the relative importance of stimuli to the various senses, (4) the extent to which the imagination differences were recognized by writers and allowed for in their work, and (5) since there seemed no available data on any part of the subject, the securing of any chance information that might shed new light.

As elsewhere in the questionnaire the desire to make the questions entirely unprejudiced in form, so that they would in no way tend to shape answers toward what I wished to see established, made them less definite and direct than they could have been made at the time—and very much less than they could be made now that the answers have shown the infinity of variations in imagination responses, the many interesting points not systematically brought out or previously considered, and the great difficulty, for any one analyzing his reactions for the first time, in giving clear-cut answers. The answerers, remember, received only the bare questions without even a hint of the explanation and purpose as fully stated here. With such explanation the questions probably seem sufficiently definite. They did to the several authors and editors to whom I turned for aid in compiling them. But the answers will show how much more definiteness would be needed for absolutely definite results.

More definite results should be secured from a questionnaire framed for that purpose. But the following answers, partly because of the very fact of comparative indefiniteness in the questions, are so richly suggestive, so stimulating and illuminating in a hundred ways, that their value transcends any mere tabulation of specific results. Also, for all practical purposes, they give sufficiently definite data for satisfactory conclusions on the points aimed at.

It is to be noted that in all but the last two questions on imagination the authors were being asked as to their reactions, not as writers, but as readers only, though in some cases this distinction has not been maintained.

The first two questions may be considered as one. The third, as to solid geometry, was partly to ascertain whether those lacking visual imagination encountered unusual difficulty in a study demanding ability to imagine a third dimension in a figure drawn in only two dimensions; partly, I confess, as a check on some who might, in all good faith, analyze their abilities incorrectly; partly to show the importance of securing proper imagination stimuli in order to get complete understanding.

Indeed, the answers to these questions on visual imagination, no matter who gives them, are bound to be incorrect in a very appreciable number of cases. Surely of all subjects the imagination is one of those that least lend themselves to hard and fast analysis and iron-clad definition. Also there can be no fixed standard or basis of comparison. Add to these difficulties the similar ones connected with the various sense impressions. No group of answers, however truthful in intent, could be expected to provide absolutely reliable data, yet very practical results can be obtained and writers, as a class dealing particularly with the imagination, are unusually equipped to furnish valuable analyses. If some of those who answer have failed entirely to grasp some of the essential distinctions, others have been unfailingly clear-sighted and have given all that could be asked in the way of nicety of analysis.

For example, some of them, like Theodore S. Solomons, draw the most important distinction much more satisfactorily than I was able to do in my questionnaire even after years of considering the general subject, and the reader is referred to them if my statement of this distinction is not sufficiently clear.

The chief stumbling-block to any one attempting to answer the first two questions is the demand to draw a definite line between an actual sense impression through the imagination and a mere intellectual concept of that sense impression. It is not so easy and simple as it may seem. For example, if I may illustrate from my own case, I find that my imagination gives me very good visual impressions but none at all from the other senses. I can, with eyes shut or open, look at any thing, person or place I have seen and again see in my imagination any part or detail that I am capable of remembering intellectually in any way—can even see what I have never seen with my eyes, though of course no one can imagine anything that is not built of parts familiar to him through some kind of actual experience. But do I see things as clearly as if they were before my physical eye? It is easy to answer either yes or no, with long arguments to support either side. If imagination gives me blurred pictures, I can focus on any part of them and make it so clear it almost hurts, yet the fact remains that most of the picture is blurred. On the other hand, that is exactly the case with the physical eye. But isn't the field of exact vision smaller in one case than in the other? And so on endlessly.