Your child may have a speech or language developmental delay if he or she displays any of the following signs at his or her age. By 3 Months: Doesn’t smile Doesn’t engage or play with other people By 6 months: Doesn’t make babbling or cooing sounds Doesn’t turn toward sounds By ...
Early in the study, tape recordings of a group of six infants were taken at monthly intervals between six and eighteen months of age to investigate in what way, if any, babbling altered eventually to become speech.doi:10.1016/B978-0-407-00007-0.50013-6D.M. Ricks...