6.6.5. Caregiver Subjective Impression

We asked the caregivers the following question: "Did the participant talk with the robot more positively, comparing to when he or she talked with staffs." The question used a 7-point Likert scale, in which one means 'strongly disagree', and seven means 'strongly agree'. The question was asked in order to find out if the participant had been in the same or different state as usual.
