When a baby says ' dada ' or ' mama ' does he really know what it means? When your 2-year-old suddenly surprises you with what seems to be a very pertinent remark is it just repetition? By the age of 5 the average child has mastered not only the vocabulary, grammar and syntax of his native language but the much more difficult business of actually shaping the words.
Anthony Martin , Director of the Nuffield Hearing and Speech Centre at the Royal National Hospital, discusses how the child learns to talk and illustrates his views with recordings made at regular intervals throughout the first two years of a baby's life.
Research by DOROTHY MARTIN Recordings by BILL REID Producer DENYS GUEROULT
(A second chance to hear this programme broadcast in December)