Five programmes in which Dr Martin Bax of the Department of Paediatrics at St Mary's Hospital
Medical School. London. discovers how researchers on both sides of the Atlantic are disentangling the remarkable process by which humans acquire language.
4:OvertheThreshold
Putting together sentences that other people will understand means obeying complex grammatical rules. How do 2- and 3-year-olds set about the task of combining words in an orderly fashion?
Producer ALISON RICHARDS