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.

IV. Associated Interest. This mental state is a higher form of interest than Curiosity. It is a practical interest in things relating to one's interests in life, his weal or woe, loves or hates, instead of being the mere interest in novelty of Curiosity. It is an acquired trait, while Curiosity is practically an instinctive trait. Acquired Interest develops with character, occupation, and education, while Curiosity manifests strongly in the very beginnings of character, and before education. Acquired Interest is manifested more strongly in the man of affairs, education and experience, while Curiosity has its fullest flower in the monkey, savage, young child and uncultured adult. Recognizing the relation between the two, it may be said that Curiosity is the root, and Associated Interest the flower.

Associated Interest depends largely upon the principle of Association or Apperception, the latter being defined as "that mental process by which the perceptions or ideas are brought into relation to our previous ideas and feelings, and thus are given a new clearness, meaning and application." Apperception is the mental process by which objects and ideas presented to us are perceived and thought of by us in the light of our past experience, temperament, tastes, likes and dislikes, occupation, interest, prejudices, etc., instead of as they actually are. We see everything through the colored glasses of our own personality and character. Halleck says of Apperception: "A woman may apperceive a passing bird as an ornament to her bonnet; a fruit grower, as an insect killer; a poet, as a songster; an artist, as a fine bit of coloring and form. The housewife may apperceive old rags as something to be thrown away; a ragpicker, as something to be gathered up. A carpenter, a botanist, an ornithologist, a hunter, and a geologist walking through a forest would not see the same things." The familiar tale of the text-books illustrates this principle. It relates that a boy climbed up a tree in a forest and watched the passers-by, and listened to their conversation. The first man said: "What a fine stick of timber that tree would make." The boy answered: "Good morning, Mr. Carpenter." The second man said: "That is fine bark." The boy answered: "Good morning, Mr. Tanner." The third man said: "I'll bet there's squirrels in that tree." The boy answered: "Good morning, Mr. Hunter." Each and every one of the men saw the tree in the light of his personal Apperception or Associated Interest.

Psychologists designate by the term "the apperceptive mass" the accumulated previous experiences, prejudices, temperament, inclination and desires which serve to modify the new perception or idea. The "apperceptive mass" is really the "character" or "human nature" of the individual. It necessarily differs in each individual, by reason of the great variety of experiences, temperament, education, etc., among individuals. Upon a man's "apperceptive mass," or character, depends the nature and degree of his interest, and the objects which serve to inspire and excite it.

It follows then that in order to arouse, induce and hold this Associated Interest of the prospect, the Salesman must present things, ideas or suggestions which will appeal directly to the imagination and feelings of the man before him, and which are associated with his desires, thoughts and habits. If we may be pardoned for the circular definition we would say that one's Associated Interest is aroused only by interesting things; and that the interesting things are those things which concern his interests. A man's interests always interest him—and his interests are usually those things which concern his advantage, success, personal well-being—in short his pocketbook, social position, hobbies, tastes, and satisfaction of his desires. Therefore the Salesman who can throw the mental spot-light on these interesting things, may secure and hold one's Associated Interest. Hence the psychology of the repeated statement: "I can save you money;" "I can increase your sales;" "I can reduce your expenses;" "I have something very choice;" or "I can give you a special advantage," etc.

It may as well be conceded that business interest is selfish interest, and not altruistic. In order to interest a man in a business proposition he must be shown how it will benefit him in some way. He is not running a philanthropic institution, or a Salesman's Relief Fund, nor is he in business for his health—he is there to make money, and in order to interest him you must show him something to his advantage. And the first appeal of Associated Interest is to his feeling of Self Interest. It must be in the nature of the mention of "rats!" to a terrier, or "candy!" to a child. It must awaken pleasant associations in his mind, and pleasing images in his memory. If this effect is produced, he can be speedily moved to the succeeding phases of Imagination and Inclination. As Halleck says: "All feeling tends to excite desire. * * * A representative image of the thing desired is the necessary antecedent to desire. If the child had never seen or heard of peaches he would have no desire for them." And, following this same figure, we may say that if the child has a taste for peaches he will be interested in the idea of peaches. And so when you say "peaches!" to him you have his Associated Interest, which will result in a mental image of the fruit followed by a desire to possess it, and he will listen to your talk regarding the subject of "peaches."

The following are the general psychological rules regarding Associated Interests:

I. Associated Interest attaches only to interesting things—that is to things associated with one's general desires and ideas.

II. Associated Interest will decline in force and effect unless some new attributes or features are presented—it requires variety in presentation of its object.