Table 3.

Attitude scale (adapted from Bickmore et al [27]).

Attitude	Questions	Response anchors
Usability	How easy was it to “talk” with Ashley?	1 (always hard) to 7 (always easy)
Continuance	How much would you like to continue working with Ashley?	1 (not at all) to 7 (very much would like)
Relationship	How would you describe your relationship with Ashley?	1 (complete stranger) to 7 (always a friend)
Preference	Would you have rather talked with your doctor or nurse rather than Ashley?	1 (definitely prefer doctor or nurse) to 7 (definitely prefer Ashley)
Adherence	How likely is it that you will follow Ashley’s advice?	1 (very unlikely) to 7 (very likely)
Satisfaction	How satisfied were you with Ashley?	1 (very dissatisfied) to 7 (very satisfied)