Each participant will be enrolled for 22 weeks. Participants will be randomly assigned to receive either the active or control lighting condition. Each lighting condition will be 8 weeks in length. After a 4 week washout, each participant will crossover to the opposite condition. Assessments will be performed before and at the end of each lighting intervention.
To test the effect of a tailored lighting intervention controlled by the Readings At Desk (RAD) controller on sleep and mood in Alzheimer's disease participants.