What's changed in recent years is that the idea of innate biological differences — for instance in cognitive abilities or communication skills — has gained academic credibility and powerful champions in widely admired researchers... In their wake has followed this boom in scientific studies claiming to find hardwiring for sex differences... Nonsense, retort a number of prominent women academics who have been trying to fight back in the US and the UK. A new book, Brainstorm, by Rebecca Jordan-Young exhaustively analyses every relevant study on hormonal sex differentiation of the human brain, and argues that they are riddled with weaknesses, inconsistencies and ambiguity. It's a clarion call for better science on the subject.