“Just like neurotypical infants, they were more likely to produce a speechlike vocalization — not laughing or crying — after an adult utterance in parentese register compared to adult register. That data includes information gathered from the center’s cohort of infant siblings: children who have an older brother or sister already diagnosed with autism. Language Interaction and Language Acquisition in Children Lab Dr. Pumpki Lei Su directs the Language Interaction and Language Acquisition in Children Lab, where researchers study how various groups of children acquire language. Su said that all parents have this tool at their disposal to help their children learn language. We know some autistic children also experience sensory differences, such as hypersensitivity to sound.