The word habit may seem twisted somewhat from its customary use when employed as we have been using it. But we need a word to express that kind of human activity which is influenced by prior activity and in that sense acquired; which contains within itself a certain ordering or systematization of minor elements of action; which is projective, dynamic in quality, ready for overt manifestation; and which is operative in some subdued subordinate form even when not obviously dominating activity. Habit even in its ordinary usage comes nearer to denoting these facts than any other word. If the facts are recognized we may also use the words attitude and disposition. But unless we have first made clear to ourselves the facts which have been set forth under the name of habit, these words are more likely to be misleading than is the word habit. For the latter conveys explicitly the sense of operativeness, actuality. Attitude and, as ordinarily used, disposition suggest something latent, potential, something which requires a positive stimulus outside themselves to become active. If we perceive that they denote positive forms of action which are released merely through removal of some counteracting "inhibitory" tendency, and then become overt, we may employ them instead of the word habit to denote subdued, non-patent forms of the latter. In this case, we must bear in mind that the word disposition means predisposition, readiness to act overtly in a specific fashion whenever opportunity is presented, this opportunity consisting in removal of the pressure due to the dominance of some overt habit; and that attitude means some special case of a predisposition, the disposition waiting as it were to spring through an opened door. While it is admitted that the word habit has been used in a somewhat broader sense than is usual, we must protest against the tendency in psychological literature to limit its meaning to repetition. This usage is much less in accord with popular usage than is the wider way in which we have used the word. It assumes from the start the identity of habit with routine. Repetition is in no sense the essence of habit. Tendency to repeat acts is an incident of many habits but not of all. A man with the habit of giving way to anger may show his habit by a murderous attack upon some one who has offended. His act is nonetheless due to habit because it occurs only once in his life. The essence of habit is an acquired predisposition to _ways_ or modes of response, not to particular acts except as, under special conditions, these express a way of behaving. Habit means special sensitiveness or accessibility to certain classes of stimuli, standing predilections and aversions, rather than bare recurrence of specific acts. It means will. III