There are several theories of psychosocial aging, including integrity versus despair, activity theory, and socioemotional selectivity theory. Successful aging is related to selection, optimization, and compensation. Discrimination based on gender and age is common, with women facing barriers such as the glass ceiling. Friendships and relationships with family members like children and siblings are important for well-being in late adulthood. Elder abuse is a problem, with neglect and physical abuse being most common. Factors like lifestyle, coping skills, and social support can contribute to successful aging. Government programs such as Social Security and Medicare provide financial support for many older adults.