ABSTRACT
It was shown in the last chapter that in human beings instinctive activities play a very small part as compared with those based upon experience. We mentioned sucking and swallowing in new-born children, and also their clutching reaction, as an example of inherited aptitude for activity; at puberty, the sex drive appears in a sharply defined form, after having already signalized its presence at an earlier age by various actions of a more diffused character.
