During the second half-year--sooner or later in particular cases--the child is ready to begin to imitate. Imitation is henceforth, for the following few years, the most characteristic thing about his action. He first imitates movements, later sounds, especially vocal sounds. His imitations themselves also show progress, being at first what is called "simple imitation" (repeating a distinction already spoken of in the chapter on animals), as when the child lies in bed in the morning and repeats the same sound over and over again. He hears his own voice and imitates it. In this sort of imitation he simply allows his instinct to reproduce what he hears without control or interference from him. He does not improve, but goes on making the same sounds with the same mistakes again and again. But a little later he begins what is called "persistent imitation"--the "try-try-again," already spoken of--which is a very different thing. Persistent imitation shows unmistakably the presence of will. The child is not satisfied with simple imitation or mere repetition, whether it be good or bad in its results. He now sees his errors and aims consciously to improve. Note the child's struggles to speak a word right by imitation of the pronunciation of others. And he succeeds. He gradually gets his muscles under control by persistence in his try-try-again. Then he goes further--about the beginning of his second year, usually. He gets the idea that imitation is the way to learn, and turns all his effort into imitations experimentally carried out. He is now ready to learn most of the great processes of his later culture. Speech, writing, this special accomplishment and that, are all learned by experimental imitation. The example of the child's trying to draw or write has already been cited. He looks at the copy before him; sets all his muscles of hand and arm into massive contraction; turns and twists his tongue, bends his body, winds his legs together, holds his breath, and in every way concentrates his energies upon the copying of the model. In all this he is experimenting. He produces a wealth of movements, from which, very gradually, as he tries and tries again, the proper ones are selected out. These he practises, and lets the superfluous ones fall away, until he secures the requisite control over hand and arm. Or suppose a child endeavouring, in the crudest fashion, to put a rubber on the end of a pencil, after seeing some one else do it--just the sort of thing a year-old child loves to imitate. What a chaos of ineffective movements! But with repeated effort he gets nearer and nearer to it, and finally succeeds.