So although Gilmartin uses a somewhat different terminology, his story fits well with current biology.
Gynephiles and androphiles
Gilmartin does differentiate between gynephilic (woman-loving) and androphilic (man-loving) non-masculine boys. He divides the gynephilic (heterosexual) boys into two sub-categories: Some of them are effeminate, some of them are not.
One of the major differences between Gimartin's love-shy men and
Blanchard and Bailey's autogynephiliacs is that Blanchard and Bailey make a point out of the autogynephiliacs
not being effeminate. For Bailey all effeminate men are "homosexual transsexuals". Woman-loving autogynephiliacs look and act in a masculine manner.
Gilmartin, on the other hand, argues that gynephilic (heterosexual) boys may very well be effeminate:
"Other brain sections have to do with effeminacy. When these are not masculinized, the person becomes an effeminate little boy. And contrary to popular impression, most effeminate men are NOT homosexual. Because of a specific enzyme deficiency during their prenatal period, they become effeminate heterosexuals. And most of them, like heterosexuals generally, will marry and become fathers. But because of rigid and often uncompromising gender role expectations for males, they will suffer much teasing and hazing throughout their formative years as a result of their effeminacy."
Different types of femininity
There can be several reasons for the difference between Gimartin's postition regarding gynephilic effeminate boys and the one of Blanchard and Bailey.
It could be that Blanchard's and particularly Bailey's discussion of effeminate gays and masculine woman-loving autogynephiliacs is based on a projection of their own prejudices. In other words: they see what they want to see. It is certainly true that this part of the autogynephilia theory is the least scientific one.
Blanchard and Bailey base their theory on the observation of transwomen and M2F transgendered seeking surgery. I suspect their impression is caused by the fact that gynephilic transsexuals -- on average -- transition much later than the androphilic ones. Older women look less feminine than younger ones. Moreover, late transitioners have spent a life time trying to live as men, picking up their mannerisms in the process.
But it could also be that Gilmartin has a view of being feminine that is much broader that Blanchard and Bailey's. For Gilmartin this is more than effeminate looks and mannerism. It is also a matter of stereotypical female interests and a lack of male typical assertiveness.
Gilmartin elaborates on this:
"(p. 58) Now, another section of the brain has to do with social assertiveness, competitiveness and drive—the opposite of 'feminine' passivity. And this is the brain section which has a very strong bearing upon shyness generally, and especially upon love-shyness and the behavioral inertia that typically accompanies it.
"The nonassertive, unaggressive little boy will commonly develop non-masculine interest patterns. In essence, he violates traditional gender role expectations in terms of interests and preferences rather than in terms of either effeminacy or in terms of homosexuality or erotic orientation. For example, he will prefer quiet, non-physical forms of play; working with arts and crafts, music and theatre arts, dolls and figurines, etc., all of which relate in different ways to violation of gender role expectation.
Friends, family and foes expect effeminate boys to be homosexual, and classify them as such.
"The shy, passive boy is very often mislabeled 'homosexual' just as the effeminate boy is perhaps even more often mislabeled 'homosexual'. Conservative and rigid people tend to apply the label 'homosexual' to any young boy who violates traditional gender role expectations, just as these same people commonly affix such labels as 'communist' and 'unAmerican' to any person who espouses a political, social or religious attitude or belief with which they happen to disagree."
The sliders of gender development
Like
Natalie and me Gilmartin ends up with a model consisting of a large number of variables that may lead to the development of non-typical behavior and interests:
"To be sure, occasionally a number of different enzymes will malfunction while a child is intra utero. And in that case the child (if male) will develop a number of different problems. For example, he may develop BOTH effeminacy AND homosexuality. Or he may develop BOTH effeminacy and chronic shyness. Or he may develop chronic shyness and homosexuality. And in a few rare cases he may develop all three of these separate problems."
Trying to reduce gender identification to one or two variables is therefore impossible. There are not two types of non-masculine born men in this narrative (gynephilic vs. androphilic), but rather a large number of possible combinations of traits. Trying to force them all into a model based on on only one of these variables -- sexual orientation in the case of Blanchard and Bailey -- is to oversimplify the matter.
An explanation for the development of love-shyness
Gilmartin has no final explanation for the variation of hormone and enzyme levels. He does point to some East German research of the time that indicated that there is a strong relationship between a pregnant woman's state of mind, and her male fetus' blood testosterone level. Certain personality traits of a pregnant woman had the effect of neutralizing either the testosterone that is released into the bloodstream of the fetus, or the enzymes which metabolize the testosterone to the point of permitting it to do its job on the various parts of the male. (p. 145).
As far as I know, this theory has not been completely abandoned by modern biologists. There are those that argue that the emotional or physical state of the mother can influence the development of the fetus.
Alicia Garcia-Falgueras and Dick F. Swaab point to several possible factors that may explain variation in gender identity and sexual orientation. Contemporary research indicates that the chance that a boy will be homosexual increases with the number of older
brothers he has:
"This phenomenon is known as the fraternal birth order effect and is putatively explained by an immunological response by the mother to a product of the Y chromosome of her sons. The chance of such an immune response to male factors would increase with every pregnancy resulting in the birth of a son."
Like Gilmartin they consider the emotional state of the mother:
"A stressed pregnant woman has a greater chance of giving birth to a homosexual son. An interesting hypothesis is that the changes in androgen concentration during pregnancy as a result of environmental stress factors may influence the fetal central nervous system as an adaptive adjustment to the environment"
Needless to say, this may also have consequences for the development of other traits linked to our understanding of gender role: introversion/extroversion and level of aggressiveness included.