The details of the scores for each of the six factors analyzed in the NASA-TLX questionnaire
(Fig. 3) reveal that the use of the robot impacts mostly on the mental demand of the task and on the effort required from the caregiver, while actually the use of the robot increases the temporal demands of the tasks.
B. Division of the Caregivers Time
Regarding the time spent with personalized attention to users, a total of 862 segments were annotated by the two annotators. Their annotation were in agreement only in 491 cases (∼57% of the sample). In order to deal with conflicting classification of segments between the two observers, a set of rules was defined. In the cases that the two classes for a segment were User and Activity, the segment was
(Fig. 3) reveal that the use of the robot impacts mostly on the mental demand of the task and on the effort required from the caregiver, while actually the use of the robot increases the temporal demands of the tasks.
B. Division of the Caregivers Time
Regarding the time spent with personalized attention to users, a total of 862 segments were annotated by the two annotators. Their annotation were in agreement only in 491 cases (∼57% of the sample). In order to deal with conflicting classification of segments between the two observers, a set of rules was defined. In the cases that the two classes for a segment were User and Activity, the segment was