T
The Story of Testosterone, the Hormone That Dominates and Divides Us
by Carole Hooven
An exploration of the hormone that makes men do strange things while keeping the species going.
“Testosterone is present in our blood in minute quantities,” writes Hooven, co-director of undergraduate studies in the department of human evolutionary biology at Harvard. “Both sexes produce it, but men have ten to twenty times as much as women.” She continues, “if the Y chromosome is the essence of maleness, then T is the essence of masculinity, at least in the popular mind.” That popular-mind aspect plunges the author into timely and intriguing yet eminently debatable territory, as she’s left to address such matters as biological determinism, the question of whether there are truly sex differences, and what role testosterone plays in sexual violence and aggressiveness of other kinds. Much of this boils down to the ancient question of nature vs. nurture, and Hooven walks a fine line between the two. Carefully, she notes how our now-well-developed scientific understanding of the biochemistry of testosterone does not mean that “we have to accept current levels of sexual assault, harassment, discrimination, or coercion.” The author privileges definitions of sex while not giving much breathing room for contending notions of gender. Exploring the question of why the play of boys and girls is different, “it is a remarkable and unexplained coincidence that social forces have exactly reproduced the kinds of differences in play that would be predicted from endocrinology and evolution—in every human culture where they have been studied.” As for the matter of how much testosterone figures into the appallingly high levels of violence in the U.S. and elsewhere, Hooven writes, “taking arrest rates as a rough proxy for the composition of offenders, men commit 80 to 85 percent of violent crimes in the United States.” Then the author brings socialization into the picture to allow for circumstance, personality, and other non-T factors. In the end, “it’s complicated.”
Moderately interesting popular science likely to excite academic debate on sex and gender.