Infants raised the pitch of their vocalizations when stimulated by vocalizing parents. Nonvocal stimulation did not repeat the effect. Intonation contours did not change during different conditions. The pitch of the parents' vocalizations also rose during vocal interaction. Changes in infant pitch were interpreted as a function of imitation.…

This paper reports on two aspects of dyadic communication skills: verbal imitation, and response to questions and commands, as they relate to the development of semantic functions in three English-speaking children. The children, aged 16, 21 and 22 months, were unobtrusively videotaped during weekly free play sessions with their mothers. The…

A comprehensive bibliography on linguistic input in the home, clinic, and/or classroom is presented. Three general categories of materials are included: language spoken to normal children, cross-cultural studies, and language spoken to special populations. Linguistic input is a term that refers to the special language register that parents use to…