Whether one or the other sex tendency will dominate depends upon the
quantity of sex hormone divergence from the ideal normal. But also
determinant are the environment stimuli provoking excessive or
deficient secretory reactions from the other endocrines involved,
through the vegetative nervous system. Such especially are the
associates of the mixed sex individual. Ordinarily the combative male
and the submissive female are differentiated by contrasts of skin
and hair, fat and bone structure. The combative male is built as a
fighting machine, the submissive female as an organism of attractive
grace and beauty for impregnation and parturition. When one sees the
fragile woman aggressive, the masculinoid woman submissive, one
may infer an education of experience that has brought the usually
recessive glands into the foreground, and by their hyperactivity
imposed a bisexuality of function upon a unisexual anatomic structure.
A man apparently as formidable as a tyrannosaurus, may be ruled by
his wife for the same reason. These combinations of a single organic
sexuality with a functional bisexuality, based upon internal secretion
disturbances, are frequent, and merit the name of functional
hermaphrodites or mixed sex types.

MIXED SEX AND THE FAMILY

The psychology of the family in its relation to the endocrine traits
of its members is something that still remains to be thoroughly worked
out as a problem of tremendous importance. Particularly are the
reactions of the mixed sex types to be carefully considered. For,
since the family is fundamentally a sex institution, devised to
satisfy the sex needs, all the way from companionship to parenthood,
it is apparent that the mixed sex types will be tried the hardest by
its inexorable conditions. It is in relation to the mother (or nurse)
first, the father next, and other associates in proportion to their
proximity, that the primary endocrine-vegetative mechanisms, the germs
of the growing soul, become established. These are superimposed upon
the hereditary instinct apparatus.

Fear, rage and love reactions develop first in association with the
suckling reflex, and the accompaniments, the mother's smile and voice,
the color of her hair, eyes and skin, her breasts and odors. Each time
the babe reacts to a pleasant or unpleasant stimulus, there is an
outpouring of certain internal secretions, a cessation of others, a
tingling of certain vegetative nerves and organs, a hushing of ot