I am starting this as a General Questions thread, because I don’t want to detract from a Great Debate thread http://www.straightdope.com/ubb/Forum7/HTML/000949.html
discussing, in a case in which an 11 year old girl (who reportedly looked much older than 11) solicited sex from a 23 year old man, whether the man should be sentenced harshly IAW statutory rape guidelines, or leniently due to mitigating circumstances (she solicited him, she looked older….)
Within this debate, a sideline developed in how probable it is that an 11 year girl could be, as reported, “fully developed”. I’ve C&P’d pertinent posts & would like to continue the discussion here. If you would like to comment on the sentencing, please use the link above!
Jois posted:
I answered:
Jois replied:
Jois, I think a lot of our disagreement here is one of perspective. (I’m assuming, from your last post, that you are a teacher) You see & remember the one kid who stands out in a class. I am an Endocrinologist. While I primarily treat adults, my certification board exams did include puberty & precocious puberty. I think of this issue in terms of which kids have pathological causes of precocious (early) puberty, and require moderately expensive evaluations, and very expensive treatment. Between what is normal/average/typical and what is abnormal/demands evaluation & treatment there are a fair number of kids who may be outside 2 SD (= “not at all unusual” in my post), but not in the very small number (1-2 per 1,000 roughly) who have some pathological state leading to precocious puberty, which will end up seriously compromising final adult height.
My main reason to post at all was to correct the impression your first post gave that a) a girl menstruating by age 11 was highly unusual and b) that such a girl would be short - under 5’0".
A 105 lb. girl (requisite weight for menarche) actually IS pretty big for 9 or 10, or even 11years old (roughly 98th, 90th, 70th percentile, respectively).
My description did not describe pubertal development in full; it was intended only to show that if a girl does menstruate early, then she has already undergone the majority of her growth spurt, and will be TALL for her age, since her classmates will not have had this accelerated growth, and not, as you suggested, short.
Traditional cut-offs for normal puberty are girls with Stage II breast or axillary/pubic hair development have been that under 8 is abnormal. BUT, recent epidemiological studies show that among Caucasian girls, 5% had Tanner stage II or higher breast development, and 3% had Tanner stage II+ axillary/pubic hair. Among African-American girls, the rate is even higher - 15% with Tanner stage II+ breast development, and 18% Tanner stage II+ axillary/pubic hair development.
(Cite: “Central Precocious Puberty: An Overview of Diagnosis, Treatment, and Outcome”, Peter A. Lee, Endocrinology & Metabolism Clinics of North America, Dec 1999, Vol28:4, pp901-918)
Sorry, this is not avail on web. E-mail me & I will fax/snail mail on request.
Additional cites:
Columbia University Home Medical Site @ http://cpmcnet.columbia.edu/texts/guide/hmg08_0001.html#8.4
[quote]
FEMALE SEXUAL DEVELOPMENT
In girls, the first physical signs of sexual development are the budding of breasts, usually between ages 9 and 13. Not uncommonly, one breast may begin to develop before the other, or the breasts will be asymmetrical. While this may seem a cause for concern, it usually is not a sign of abnormality. Breasts are seldom exactly the same size, and by adulthood they have usually evened out so the differences are barely noticeable. If the breasts remain markedly asymmetrical or, in rare instances, one fails to develop, it can be a source of embarrassment and sensitivity. A visit to a physician may assure a girl with asymmetrical breasts that she does not have a disease, and that the problem can be surgically corrected.
At the same time as the breasts develop or shortly thereafter, pubic and other body hair begins to grow. As puberty progresses, girls experience an adolescent growth spurt and begin to accumulate body fat in an adult