Long before children learn language, they communicate with gestures, vocalizations, facial expressions, and body language. This is known as prelinguistic (prior to language) communication. Most children learn this type of communication without formal teaching, but children who are deaf-blind may need guidance to learn it. This publication describes the findings of a study on the use of adapted prelinguistic milieu teaching (PMT) for children who are deaf-blind. In adapted PMT, an instructor, working one-on-one with a child, uses a variety of strategies to teach and encourage children to use gestures and vocalizations to communicate intentionally.