Roles of Speech Output in Augmentative and Alternative Communication: Narrative Review.

Speech output from speech-generating devices (SGD) and SGD software, such as talking word processors, has changed the landscape of options for aided communication. The purpose of this paper is to review and critique research into the roles of speech output for communication partners, learners, and learner-partner dyads. Research on partner - oriented roles is reviewed in terms of attitudes and perceived communicative competence, and communicative behavior.