10. study partner, defined as an informant/caregiver who will be able to answer questions about the study participant, and meets one of the following criteria: (a) lives with the participant; (b) spends at least 3 times per week in-person contact with the participant; (c) spends at least 3 times per week in phone contact with the participant; or (d) spends at least 10 hours per week in any combination of phone or in person contact;