Right Hand, Left Hand by Chris McManus has won the Aventis. “We want to know why it is that most people are one way – but there is this minority that’s the other way round. We think it has to be because there’s an advantage to being left-handed. We think they’re a bit more creative – a bit more unusual. We say right-handers are ‘off-the-peg’ and left-handers are ‘designer’.” McManus has twin daughters: one is right-handed, like him; the other is a leftie.