“…We created an interactive ball to address some goals that were set out regarding alertness, shown affect, and amount of movement. I explained the difficulties inherent in doing research with such a user group: doing research on interventions for people with PIMD leads to profound methodological challenges due to the small number of people with homogeneous conditions, fluctuating health differences, contextual differences, and the longer treatment time that is required [248]. I showed that there were large differences in the responses to the ball, three of our nine participants included in the ten sessions showed positive effects on one or more of the targeted measures.…”