Impact of favorite stimuli automatically delivered on step responses of persons with multiple disabilities during their use of walker devices.

Favorite stimuli were automatically delivered contingent on the performance of steps by two persons (a boy and a woman) with multiple disabilities during their use of support walker devices. The study lasted about 4 months and was carried out according to a multiple baseline design across participants. Recording concerned the participants' frequencies of steps and their indices of happiness during baseline and intervention sessions. Data showed that both participants had a significant increase in each of these two measures during the intervention phase. Implications of the findings and new research issues are discussed.

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