Extending microswitch-based programs for people with multiple disabilities: use of words and choice opportunities

This study assessed a microswitch-based program in which three request and one choice microswitches were used for two participants with multiple disabilities. The program was then transferred into the participants' daily contexts. Each request microswitch was linked to different stimulation opportunities. Every activation of the microswitch triggered the verbal announcement of one such opportunity that the participant could choose or bypass. The request microswitches were introduced individually and then combined. During the last part of the intervention and the post-intervention checks, all three request microswitches plus the choice microswitch were simultaneously available. Both participants learned to use the microswitches very rapidly. Responding levels were high during intervention and the post-intervention checks carried out in the participants' daily contexts. Implications of the findings for advanced microswitch-based programs and vocal recognition technology are discussed. (C) 2003 Elsevier Science Ltd. All rights reserved.