 Prior studies of aggression treatment have not examined using a preventive strategy to decrease incidence of aggression in persons with dementia PWD. Almost all studies have examined use of pharmacologic interventions following development of aggression.This 5-year randomized controlled trial based on the Unmet Needs Model will focus on preventing aggression in PWD with pain and pain-related features by providing the caregiver with targeted education and skill training. PWD and their caregivers will be randomized to APT or to an enhanced usual primary care condition EU-PC. APT will use active learning tools, including didactics, role-playing, and multimedia eg, books and DVDs to educate and provide skill training for the caregiver. The 6-8 modules in the intervention will include 4 core modules that address 4 main aggression risk factors: a recognizing pain, b treating pain, c increasing pleasant activities, and d improving patient-caregiver communication. Caregivers can select 2 to 3 additional elective sessions; elective selection is guided by the needs of the dyad to further enhance skills related to these core topics. EU-PC provides the patient and caregiver educational materials on pain, notifies the primary care provider of the PWDs level of pain and depression, and provides 8 weekly supportive telephone calls to caregivers. PWD and caregiver outcomes will be collected at baseline, 3, 6 and 12 months. 