Suppose that some one rolls a ball to a child; he catches it and rolls it back, and the game goes on. Here the stimulus is not just the sight of the ball, or the sight of the other rolling it. It is the situation--the game which is playing. The response is not merely rolling the ball back; it is rolling it back so that the other one may catch and return it,--that the game may continue. The "pattern" or model is not the action of the other person. The whole situation requires that each should adapt his action in view of what the other person has done and is to do. Imitation may come in but its role is subordinate. The child has an interest on his own account; he wants to keep it going. He may then note how the other person catches and holds the ball in order to improve his own acts. He imitates the means of doing, not the end or thing to be done. And he imitates the means because he wishes, on his own behalf, as part of his own initiative, to take an effective part in the game. One has only to consider how completely the child is dependent from his earliest days for successful execution of his purposes upon fitting his acts into those of others to see what a premium is put upon behaving as others behave, and of developing an understanding of them in order that he may so behave. The pressure for likemindedness in action from this source is so great that it is quite superfluous to appeal to imitation. As matter of fact, imitation of ends, as distinct from imitation of means which help to reach ends, is a superficial and transitory affair which leaves little effect upon disposition. Idiots are especially apt at this kind of imitation; it affects outward acts but not the meaning of their performance. When we find children engaging in this sort of mimicry, instead of encouraging them (as we would do if it were an important means of social control) we are more likely to rebuke them as apes, monkeys, parrots, or copy cats. Imitation of means of accomplishment is, on the other hand, an intelligent act. It involves close observation, and judicious selection of what will enable one to do better something which he already is trying to do. Used for a purpose, the imitative instinct may, like any other instinct, become a factor in the development of effective action. This excursus should, accordingly, have the effect of reinforcing the conclusion that genuine social control means the formation of a certain mental disposition; a way of understanding objects, events, and acts which enables one to participate effectively in associated activities. Only the friction engendered by meeting resistance from others leads to the view that it takes place by forcing a line of action contrary to natural inclinations. Only failure to take account of the situations in which persons are mutually concerned (or interested in acting responsively to one another) leads to treating imitation as the chief agent in promoting social control.