ScienceDaily (July 27, 2011) — “The biological causes of autism are still not understood. A diagnosis of autism is only possible after ages three or four; and the tests are subjective, based on behavioral symptoms. Now, in research that appeared in Neuron, scientists at the Weizmann Institute of Science, Carnegie Mellon University and the University of California, San Diego have found, for the first time, a method that can accurately identify a biological sign of autism in very young toddlers.”
Weizmann Institute of Science (2011, July 27). Weak synchronization in toddler brains may be a biological marker for autism. ScienceDaily.