Objective of study is to assess the costs of care, objective and subjective caregiver burden and quality of life in relation to disease severity measured by cognitive function, ADL capabilities and presence of behavioral disturbances in Alzheimer's disease

Inclusion Criteria:

• Clinical diagnosis of possible or probable Alzheimer's disease, with or without vascular elements
• The primary caregiver can be identified
• The patient and his/her primary caregiver are both willing and able to participate in the study

Exclusion Criteria:

• Patient or caregiver affected by alcohol or narcotics to the extent that it interferes with the completion of the study
• Patient or caregiver does not understand English
• Patient and/ or caregiver is the physician or physician's staff
• Patient and/ or caregiver is a family member of the physician or physician's staff

Adults with Alzheimer's Disease and their informal caregivers are recruited from both outpatient settings and long-term residential care settings