Abstract
Voice output communication aids are expensive in terms of initial outlay and ongoing staff support. Further efficacy research and innovative methodologies are necessary to explore the role of this technology in facilitating communication and to develop more informed, effective therapeutic approaches to service delivery in this area. A research project is reported that evaluates the progress of four children using voice output communication aids. The children's progress has been video-recorded at six monthly intervals and analysed using conversation analysis and feedback questionnaires. Initial observations and implications for service delivery are discussed.