Human Traits and their Social Significance

by Irwin Edman

This process of trial and error is perhaps best illustrated in the behavior of the lower animals where careful experiments have been conducted for the purpose of tracing the process of learning. In the classic cases reported by Thorndike and Watson, when chickens, rats, and cats were placed in situations where the first response failed to bring satisfaction, their behavior was in each case marked by the following features. At the first trial the animals in every case performed a wide variety of acts useless to secure the satisfaction they were instinctively seeking, whether it was food in a box, or freedom from confinement in a cage. Upon repeated trials the act appropriate to securing satisfaction was performed with increasing elimination of useless acts, and consequent decrease of the time required to perform the act requisite to secure food, or freedom, or both, as the case might be. One of Thorndike's famous cat experiments is best told in his own report:

If we take a box twenty by fifteen by twelve inches, replace its cover and front side by bars an inch apart, and make in this front side a door arranged so as to fall open when a wooden button inside is turned from a vertical to a horizontal position, we shall have means to observe such [learning by trial and error]. A kitten, three to six months old, if put in this box when hungry, a bit of fish being left outside, reacts as follows: It tries to squeeze through between the bars, claws at the bars, and at loose things in and out of the box, stretches its paws out between the bars, and bites at its confining walls. Some one of all these promiscuous clawings, squeezings, and bitings turns round the wooden button, and the kitten gains freedom and food. By repeating the experience again and again the animal gradually comes to omit all the useless clawings, and the like, and to manifest only the particular impulse (e.g., to claw hard at the top of the button with the paw or to push against one side of it with the nose) which has resulted successfully. It turns the button around without delay whenever put in the box. It has formed an association between the situation confined in a box with a certain appearance and the response of clawing at a certain part of that box in a certain definite way. Popularly speaking, it has learned to open a door by pressing a button. To the uninitiated observer the behavior of the six kittens that thus freed themselves from such a box would seem wonderful and quite unlike their ordinary accomplishments of finding their way to their food or beds.... A certain situation arouses, by virtue of accident or more often instinctive equipment, certain responses. One of these happens to be an act appropriate to secure freedom. It is stamped in in connection with that situation.[1]

[Footnote 1: Thorndike: Educational Psychology, Briefer Course. p. 129.]

Perhaps the most significant factor to be noted in this, and in similar cases, is that the successful response to a baffling situation is acquired, and that this acquisition remains a more or less permanent possession of the human or animal organism. Particularly important for the problem and practice of education is the mechanism by which these learned modes of behavior are acquired. For, to attain skill, knowledge, intellect, character, is to attain certain determinate habits of action, certain recurrent and stable ways of responding to a situation. The reason why the cat in the box ceased to perform the hundred and one random acts of clawing and biting, and after a number of trials got down to the immediately necessary business of turning the button was because it had learned that one thing only, out of the multitude of things it could do, would enable it to get out of the box and get its food. To say that it learned this is not to say that it consciously realized it; it means simply that when placed in such a situation again after having been placed in it a sufficient number of times, it will be set off to the turning of the button which gets it food, instead of biting bars and clawing at random—actions which merely serve further to frustrate its hunger. The animal has not consciously learned, but its nervous system has been mechanically directed.

A large part of the education of humans as well as of animals consists precisely in the modification of our original responses to situations by a trial-and-error discovery of ways of attaining satisfactory and avoiding annoying situations. Both animals and humans, when they have several times performed a certain act that brings satisfaction, tend, on the recurrence of a similar situation, to repeat that action immediately and to eliminate with successive repetitions almost all the other responses which are possible, but which are ineffective in the attainment of some specific satisfaction. The whole training imposed by civilization on the individual is based ultimately on this fundamental fact that human beings can be taught to modify their behavior, to change their original response to a situation in the light of the consequences that follow it. This means that while man's nature remains on the whole constant, its operations may be indefinitely varied by the results which follow the operation of any given instinct. The child has its original tendency to reach toward bright objects checked by the experience of putting its hand in the flame. Later his tendency to take all the food within reach may be checked by the looks of scorn which follow that manifestation of man's original greed, or the punishment and privation which are correlated with it. Through experience with punishment and reward, humans may be taught to do precisely the opposite of what would have been their original impulse in any given situation, just as the monkey reported by one experimenter may be taught to go to the top of his cage whenever a banana has been placed at the bottom.

The prolonged period of infancy. Probably the most significant and unique fact of human behavior is the period of "prolonged infancy" which is characteristic of human beings alone. Fiske and Butler in particular have stressed the importance of this human trait. In the lower animals the period of infancy—that is, the period during which the young are dependent upon their parents for food, care, and training—is very short, extending even in the highest form of ape to not more than three months. This would appear, at first blush, to be a great advantage possessed by the lower animals. They come into the world equipped with a variety of tendencies to act which, within a week, or, as in the case of chickens, almost immediately after birth, are perfectly adapted to secure for them food, shelter, and protection. They are mechanisms from the beginning perfectly adjusted to their environment.

The human infant, while it is born with a greater number of instinctive activities than other animals, is able to make little use of them just as they stand. For years after birth it is helplessly dependent on others to supply its most elementary needs. It must be fed, carried, and sheltered; it cannot by itself even reach for an object, and it cannot for nearly two years after birth specifically communicate its wants to other people. But this comparatively long helplessness of the human infant is perhaps the chief source of human progress.

The human baby, because it can do so little at the start, because it has so many tendencies to act and has them all so plastic, undeveloped, and modifiable, has to a unique degree the capacity to learn. This means that it can profit by the experience of others and adjust itself to a great variety and complexity of situations. The chicken or the bird can do a limited number of things perfectly, but it is as if it had a number of special keys opening special locks. The power of modifying these instinctive adjustments, the capacity of learning, is like being put in possession of a pass-key. As Professor Dewey puts it, "An original specialized power of adjustment secures immediate efficiency, but, like a railway ticket, it is good for one route only. A being who, in order to use his eyes, ears, hands, and legs, has to experiment in making varied combinations of their reactions, achieves a control that is flexible and varied."[1]

[Footnote 1: Dewey; Democracy and Education, p. 53.]

The more complex the environment is in which the individual must live, the longer is the period of infancy needed in which the necessary habits and capacities may be acquired. In the human being the period of infancy extends in a literal sense through the first five years of the individual's life. But in civilized societies it extends factually much longer. By the end of the first five years the child's physical infancy is over. It can take care of itself so far as actually feeding itself, moving about, and communicating with others is concerned. But so complex are the habits to which it must become accustomed in our civilization that it is dependent for a much longer period. The whole duration of the child's education is a prolongation of the period of infancy. In most civilized countries, until at least the age of twelve, the child is literally dependent on its parents. And with every advance in civilization has come a lengthening in the period of education, or learning.