Using a microswitch for vocalization responses with persons with multiple disabilities

Purpose: This study was aimed at extending the evaluation of a special micr oswitch for vocalization responses with two persons with multiple disabilit ies. Method: The study was carried out according to an ABAB sequence (with A rep resenting baseline and B treatment) with one person, and an AB sequence wit h the other person. Activation of the microswitch during treatment produced favourite environmental stimulation. Results and conclusions: The results showed that both persons had an increa se in the frequencies of vocalization responses during treatment. The impor tance of using these (fairly simple) responses within intervention programm es and some methodological issues were discussed.