It is possible. After all, the speech centers in the brain are located near/in the parietal lobes, which is where hearing processing takes place as well. However, what is shown by this study is differences in rapid motor control associated with speech. They use pre-speech vocalization...a baby's babble...in order to detect differences between developing children with and without autism -- and have found that 86% of the time, the patterns they found indicate a difference between "normal" and autistic development.
86% may not sound that great to some, but as a researcher, having a correlation above the 50% mark is incredible...having it this close to 100% practically never happens. They still need to refine the technology, method and patterns, but this will most likely become a viable, widely-accepted test for early autism screening.
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