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Robot therapy for elderly residents in a care house has been conducted since June 2005. Two therapeutic seal robots were introduced and activated for over 9 hours every day to interact with the residents. This paper presents the results of this experiment. In order to investigate the psychological and social effects of the robots, the activities of the residents in public areas were recorded by video cameras during daytime hours (8:30-18:00) for over 2 months. In addition, the hormones 17-Ketosteroid sulfate (17-KS-S) and 17-hydroxycorticosteroids (17-OHCS) in the residents' urine were obtained and analyzed. The results of the urinary tests showed that the reactions of the subjects' vital organs to stress improved after the introduction of the robots. Furthermore, the results of the case studies indicate that the residents' social interaction increased through interaction with the seal robots
Wada et al. (Fri,) studied this question.
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