
The future is digital. So says Professor John Manning, a psychologist and self-styled “finger expert” who has developed an unsettling academic obsession with other people’s hands. He claims that he can inspect a stranger’s fingers – specifically his index and ring fingers – and instantly know whether or not they have an aptitude for running or football.
Successful financial traders may be born, not made. That's the implication of a new study which found that traders who excel at short-term or "high-frequency" trading may have been exposed to higher levels of testosterone in the uterus. Last year, John Coates at the University of Cambridge, UK, and his colleagues found that traders who started their days with elevated testosterone made more money than those who didn't.
Previous studies have also suggested a link between a low index-to-ring-finger ratio and autism. They have found children with the disorder tend to have unusually long ring fingers, compared to their index fingers. This physical feature is associated with high levels of testosterone in the womb. Manning and his colleagues studied 49 children with full-blown autism and 23 with a milder variant of the condition, known as Asperger's syndrome. Manning's team found that children with autism had extremely long ring fingers compared to their index fingers, and children with Asperger's were not far behind.



