“He was one of the most distinguished of neurologists,” says Chris McManus, a professor of psychology at University College London, who has spent years dissecting the Geschwind-Behan-Galaburda theory. This was part of the problem with his work on testosterone and the brain, he adds. Geschwind’s eminence in his field made it easy for his theory to be published in important journals, even when it turned out that the evidence for it was worryingly thin.
