Specific Aim 2: To collect preliminary effect size data for sample size calculation for a larger trial. Investigators will assess standard outcomes (such as the Short Physical Performance Battery and Alzheimer's Disease Assessment Scale - cognitive subscale as primary outcomes for affected individuals; and Caregiver Burden Inventory for caregivers) commonly used in pharmacological studies of individuals with dementia at baseline, 16 and 32 weeks and calculate effect sizes (Cohen's d) for between-group differences in outcome changes in the 20 dyads of the RCT described in Specific Aim 1.