Geriatric psychology focuses on the mental health and cognitive functioning of elderly individuals, specifically those aged 65 and older. This field addresses psychological disorders like Alzheimer's and dementia, emphasizing the importance of support systems and therapy for coping with aging-related changes. The American Association for Geriatric Psychiatry plays a key role in researching and publishing findings to combat stigma around mental health in the elderly as the demand for effective treatment grows with an aging population.