Vocal Development in Young Children With Cochlear Implants: Profiles and Implications for Intervention.

Purpose: This article describes prelinguistic vocal development in 2 prelingually deaf children who received multichannel cochlear implants at 10 and 28 months of age, respectively.

Methods: Vocalizations were recorded in half-hour mother- child interactions before and after implantation and then classified into three levels of development: precanonical, canonical, and postcanonical.

Results: One child made rapid progress in vocal development after her implant was activated.