Neural Basis of Attention.—The neural conditions under which the mind exercises such active attention seem to be that during the attentive state the nervous energy concentrates itself upon the paths and centres involved in the particular experience, the resistance being decreased in the paths connecting the cells traversed by the impulse. Moreover, any nervous energy tending to escape in other channels is checked and the movements hindered, thus shutting off attention from other possible experiences. For instance, a person with little interest in horticulture might pass a flowering shrub, the colour, form, and scent making only a faint impression upon him. If, however, his companion should say, "What a lovely colour," his attention will direct itself to this quality, with the result that the colour stands out much more clearly in consciousness, and the other features practically escape his notice. Here the suggestion of the companion focuses attention upon the colour, this being accompanied with a lessening of the resistance between the centres involved in interpreting the colour sensations. At the same time resistance in the arcs involving form and smell is increased, and the energy diverted from these arcs into that of colour.
ATTENTION SELECTIVE
Attention and Interest.—At this point a question naturally arises why the mind, since it is continually subject to the influence of impressions from without and of reviving ideas from within, should select and focus attention upon certain of these to the exclusion of others. The answer usually given is that the mind feels in each case, at least vaguely, a personal interest in some change or adjustment to be wrought either in or through the impression which it makes an object of attention. When, for instance, the reader diverts his attention from the interesting story to the loud talking outside the window, he evidently desires to adjust his understanding more fully to the new and strange impression. So, also, when the spectator rivets his attention upon the flying ball, it is because he associates with this the interesting possibility of a change in the score. In like manner, the student in geometry fixes his attention upon the line joining the points of bisection of the sides, because he desires to change his present mental state of uncertainty as to its parallelism with the base into one of certainty. He further fixes his attention upon the qualities of certain bases and triangles, because through attending to these, he hopes to gain the desired experience concerning the parallelism of the two lines.
Attention and the Question.—The general conditions for determining the course of attention will be further understood by a reference to two facts already established in connection with general method. It has been seen that the question and answer method is usually a successful mode of conducting the learning process. The reason for this is that the question is a most effective means of directing a selective act of attention. For instance, in an elementary science lesson on the candle flame, although the child, if left to himself, might observe the flame, he would not, in all probability, notice particularly the luminous part. Or again, if a dry glass is simply held over the flame and then removed by the demonstrator, although the pupil may have watched the experiment in a general way, it is doubtful whether he would notice particularly the moisture deposited upon the glass. A question from the demonstrator, however, awakens interest, causes the mind to focus in a special direction, and banishes from consciousness features which might otherwise occupy attention. This is because the question suggests a problem, and thus awakens an expectant or unsatisfied state of mind, which is likely to be satisfied only by attending to what the question suggests as an object of attention.
Attention and Motive.—It has already been noted that any process of learning is likely to be more effective when the child realizes a distinct problem, or aim, in the lesson, or feels a need for going through the learning process. The cause of this is that the aim, by awaking curiosity, etc., is an effective means of securing attention. When, for example, the pupil, in learning that 3 × 4 = 12, begins with the problem of finding out how many threes are contained in his twelve blocks, his curiosity can be satisfied only by grasping certain significant relations. In approaching the lesson, therefore, with such an actual problem before him, the child feels a desire to change, or alter, his present mental relation to the problem. In other words, he wishes to gain something involved in the problem which he does not now know or is not yet able to do. His desire to bring about this change or to reach this end not only holds his attention upon the problem, but also adjusts it to whatever ideas are likely to assist in solving the problem. When, therefore, pupils approach a lesson with an interesting problem in mind, the teacher finds it much easier to centre their attention upon those factors which make for the acquisition of the new experience.
INVOLUNTARY ATTENTION
Nature of Involuntary Attention.—Attention is met in its simplest form when the mind spontaneously focuses itself upon any strong stimulus received through the senses, as a flashing light, a loud crash, a bitter taste, or a violent pressure. As already noted, the significance of this type of attention lies in the fact that the mind seeks to adjust itself intelligently to a new condition in its surroundings which has been suggested to it through the violent stimulus. The ability to attend to such stimuli is evidently an inherited capacity, and is possessed by animals as well as by children. It is also the only form of attention exercised by very young children, and for some time the child seems to have little choice but to attend to the ever varying stimuli, the attention being drawn now to a bright light, now to a loud voice, according to the violence of the impressions. On account of the apparent lack of control over the direction of attention, this type is spoken of as spontaneous, or involuntary, attention.
Place and Value.—It is only, however, during his very early years that man lacks a reasonable control even over relatively strong stimulations. As noted above, the mind acquires an ability to concentrate itself upon a single problem in the midst of relatively violent stimulations. Moreover, in the midst of various strong stimulations, it is able to select the one which it desires, to the exclusion of all others. At a relatively early age, for instance, the youth is able, in his games, to focus his attention upon the ball, and pays little attention to the shouts and movements of the spectators. On the other hand, however, it is also true that man never loses this characteristic of attending in an involuntary, or reflex, way to any strong stimulus. Indeed, without the possession of this hereditary tendency, it is hard to see how he could escape any dangers with which his body might be threatened while his attention is strongly engaged an another problem.
Educational Precautions.—That young children naturally tend to give their attention to strong stimuli, is a matter of considerable moment to the primary teacher. It is for this cause, among others, that reasonable quiet and order should prevail in the class-room during the recitation. When the pupil is endeavouring to fix his attention upon a selected problem, say the relation of the square foot to the square yard, any undue stimulation of his senses from the school-room environment could not fail to distract his attention from the problem before him. For the same reason, the external conditions should be such as are not likely to furnish unusual stimulations, as will be the case if the class-room is on a busy street and must be ventilated by means of open windows. Finally, in the use of illustrative materials, the teacher should see that the concrete matter will not stimulate the child unduly in ways foreign to the lesson topic. For example, in teaching a nature lesson on the crow, the teacher would find great difficulty in keeping the children's attention on the various topics of the lesson, if he had before the class a live crow that kept cawing throughout the whole lesson period. Nor would it seem a very effective method of attracting attention to the problem of a lesson, if the teacher were continually shouting and waving his arms at the pupils.