These findings were statistically massaged. As the authors state: “After adjusting for age, height, weight, ponderosity index, and Tanner stage, testosterone does not exhibit an overall significant racial difference in either sex”.
Height, weight, ponderosity, and Tanner stage correlate with testosterone-induced masculinization. If you correct for these factors, you also ‘correct’ for testosterone. In fact, this is noted in later publications about the Bogalusa Heart Study:
White males are taller and heavier than black males at every Tanner stage (table 1). They have identical or higher mean testosterone levels at 4 of the 5 intervals -- without any statistical adjustment (tables 2 and 3).
The fact that blacks enter puberty earlier is exactly why it would make little sense to compare hormone levels in (pre-)adolescent blacks and whites by age alone and expect meaningful results. I briefly considered pointing this out in my original comment but decided it was obvious.
The mean age (Table 1) of black males
compared to white males at Tanner stage II by either staging
method is significantly lower, suggesting that black males
enter puberty before their white counterparts. At Tanner
stage V by either staging method black and white males
again show a significant difference in mean age with blacks
being older, possibly indicating that they finish puberty later
than white males.
White males are younger than black males at the final two Tanner stages. They are barely older at Tanner stage III.
I answered all of your criticisms previously, and at some length, see my blog post at:
No. You attempted at length to rationalize away with wild speculation and reading incomprehension results that don't support your ideas. You're doing it again here, since you clearly skimmed the Bogalusa study with no aim beyond finding a pretense on which to dismiss it (thus failing to notice the items mentioned above).
The comment to which Peter Frost was replying:
Lindsey is mostly just repeating poorly-supported assertions from Peter Frost.
"Groups with the highest testosterone in the world today are primitive agriculturalists."
Wrong. Testosterone is markedly lower in Sub-Saharan Africans.
"Blacks have much higher testosterone levels than Whites from age 7-24. "
False. See above about blacks in their natural environment. In the U.S., only a tiny study of college students showed a "large" difference and this has never been replicated. Here is much larger study:
A large biracial cross-section of 1038 healthy children aged 6-18 yr with 519 blacks, 519 whites, 678 males, and 360 females was evaluated for Tanner stage and serum levels of androstenedione, dehydroepiandrosterone- sulfate, estradiol, progesterone, and testosterone. The anthropometric values of the blacks and whites were very similar at each Tanner stage with only minor differences in age, height, and weight related to an earlier onset of puberty in blacks. The hormones dehydroepiandrosterone- sulfate, progesterone, and testosterone did not exhibit any racial differences. Estradiol showed a significantly higher level among black males compared to white males (P 5 0.05) whereas androstenedione was significantly higher in both white males (P = 0.0001) and females (P I 0.01) compared with blacks.
[Steroid Hormones during Puberty: Racial (Black-White) Differences in Androstenedione and Estradiol-The Bogalusa Heart Study. J Clin Endocrinol Metab 75: 624-631,1992]
Black men in the U.S. and Africa are consistently found to have higher estrogen levels -- not testosterone levels.
"Black boys’ exposure to high testosterone begins in the womb. Black mothers’ wombs have higher testosterone, and this feeds to the fetus."
Testosterone exposure in utero is not simply a function of the mother's serum T levels.
"Assuming that higher Black testosterone levels are a causative agent in Black crime, aggression and lowered IQ"
Very bad assumptions.