III. _Curiosity._ This mental state is really a form of Interest, but is more elemental than Associated Interest, being merely the interest of novelty. It is the strongest item of interest in the primitive races, in children, and in many adults of elemental development and habits of thought. Curiosity is the form of Interest which is almost instinctive, and which impels one to turn the attention to strange and novel things. All animals possess it to a marked degree, as trappers have found out to their profit. Monkeys possess it to an inordinate degree, and the less developed individuals of the human race also manifest it to a high degree. It is connected in some way with the primitive conditions of living things, and is probably a heritage from earlier and less secure conditions of living, where inquisitiveness regarding new, novel and strange sights and sounds was a virtue and the only means of acquiring experience and education. At any rate, there is certainly in human nature a decided instinctive tendency to explore the unknown and strange--the attraction of the mysterious; the lure of the secret things; the tantalizing call of the puzzle; the fascination of the riddle. The Salesman who can introduce something in his opening talk that will arouse Curiosity in the prospect has done much to arouse his attention and interest. The street-corner fakir, and the "barker" for the amusement-park show, understand this principle in human nature, and appeal largely to it. They will blindfold a boy or girl, or will make strange motions or sounds, in order to arouse the curiosity of the crowd and to cause them to gather around--all this before the actual appeal to interest is made. In some buyers Curiosity precedes Associated Interest--the interest in the unknown and novel precedes the practical interest. In others the Associated Interest--the practical interest inspired by experience and association--precedes Curiosity, the latter manifesting simply as inquisitiveness regarding the details of the object which has aroused Associated Interest. In other cases, Curiosity and Associated Interest are so blended and shaded into each other that they act almost as one and simultaneously. On the whole, though, Curiosity is more elemental and crude than Associated Interest, and may readily be distinguished in the majority of cases.