Abstract
The demographic change and the decrease of care personnel lead to the discussion to implement robots to support older adults. To ensure sustainable use, the solutions must be accepted. Technology Acceptance is dealt with in different models, but little attention has been paid to the emotions that older adults have toward service robots that support every day or care activities. The simulated robot study examined the positive and negative emotions and the attitudes of 142 older adults toward robots in different situations and with robots of different appearances. The situation influenced both emotions and attitudes. The older adults expressed more negative emotions and a more negative attitude in a care situation. In terms of appearance, less uncanniness and higher usage intention for the human-like and android robot were reported. The results contribute to a deeper understanding of robot acceptance and should be considered in the development of service robots for older adults in the future. Furthermore, the results should be validated in vivo with existing robots.