Doctors may soon be able to predict whether a young baby will go on to develop autism. Researchers studied the brain development of two groups of infants when they were six months, 12 months and 24 months old. They found that babies who were later diagnosed with autism had rapid brain growth and a larger brain surface area. They also found that babies who had a sibling with autism were much more likely to develop autism themselves. Researchers say if changes in brain development can be spotted earlier, babies can get early therapies to lessen the impact of the condition.