The fourth group is that known as the Social Qualities, which group is composed of the following particular Qualities: _Amativeness_; _Conjugality_; _Parental Love_; _Sociability_ and _Home Love_. This group manifests outer form at the lower-back portion of the head (see Fig. 5), and shows itself by an enlargement of that region, causing the head to "bulge" back of the ears. It may best be understood by an examination of its several particular Qualities. [Illustration: FIG. 5 THE EMOTIVE QUALITIES] AMATIVENESS. This Quality manifests in a strong desire for sexual indulgence and association with the opposite sex. Its purpose is, of course, the reproduction of the race, but its abuse and perversion has led man to many excesses and unnatural practices. It is a dynamic propensity and its normal development is seemingly necessary in order to produce the "life spirit," and vital activity mental and physical. Those in whom it is deficient lack "spirit" and energy, while those in whom it is developed to excess tend to lean toward excesses. When developed normally it seems to add an attractiveness or "magnetism" to its possessors; when deficient it renders the person "cold" non-magnetic and unattractive; when over-developed and unrestrained it causes the person to become disgusting and repulsive to the normal person; vulgar, licentious and depraved. Its seat is in the cerebellum or "little brain," and it manifests outer form by an enlarged "fullness" at the nape of the neck, at the base of the skull (see group figure). It tends to cause the head to lean backward and downward at the nape of the neck. It also manifests by fullness of the lips, particularly in their middles. The lips and position of the head of persons in whom this quality is largely developed is indicative of the attitude and position of kissing. Spurzheim says of it: "It is situated at the top of the neck, and its size is proportionate to the space between the mastoid process, immediately behind the ears, and the occipital spine, in the middle of the hind head." It is noticeable that those in whom this quality is fully or largely developed seem to have the power of attracting or "charming" those of the opposite sex, while those who are deficient in it lack this quality.