He says this, I saw those same quotes on his website, but he does not cite sources for those statements. This is not based on his own work, he isn't reporting experiments or studies and their methodology. There's a saying in science, "anyone can write a book." Which means, if you write a book, you can say anything you want, there's no criteria for truth or fiction, fiction sells very well. Show me a study that shows a causal relationship between testosterone and "explosive energy." If a white man increases his testosterone concentrations (many do so illegally), he doesn't become a better runner or jumper, he adds muscle mass. Higher testosterone concentrations do not explain these characteristics in blacks. That's also a pretty huge leap from athletic ability to hip size (hip size is different than pelvic girth, and completely ignores the relaxation and expansion of the pelvis during labor and delivery). It also glosses over how evolution works. Women aren't going to get a wider pelvis because their baby has a bigger head, indeed, bigger heads during birth in the days before c-sections would have meant mother and baby both probably would have died during child birth. This also ignores that the cranial bones compress during delivery to permit the baby to get out. He also makes a huge leap between his studies of cranial size in adults (which have been debunked in other threads here, and is not relevant to this debate), and cranial size in babies. Besides, athletes competing at the elite levels are not representative of entire groups, they are at the extremes of those population distributions. What is Rushton's evidence that testosterone increases restlessness in school? And what is his evidence that it makes someone more prone to committing crimes?
