Dr Heather Hazlett, one of the researchers at the University of North Carolina, told the BBC News website: "Very early in the first year of life we see surface brain area differences, that precede the symptoms that people traditionally associate with autism.

ncG1vNJzZmivp6x7o67CZ5qopV%2Bjsri%2FjqGcmqSknXp0hJhubHFvYg%3D%3D