Final answer:
Ageing refers to the process of getting older. Maximum lifespan is the longest amount of time a species can live, and average lifespan refers to the average length of time individuals in a population live. Life expectancy estimates the average number of years a person is expected to live. Ageism is discrimination based on age, particularly against older adults. Gerontology is the interdisciplinary study of ageing and its associated challenges.
Step-by-step explanation:
Ageing, Maximum Lifespan, Average Lifespan, Life Expectancy, Ageism, and Gerontology
Ageing: Ageing refers to the process of getting older. It involves changes in a person's physical, cognitive, and social abilities that occur over time.
Maximum Lifespan: Maximum lifespan refers to the longest amount of time that a member of a species can live. For humans, the estimated maximum lifespan is around 115 years, with an absolute upper limit of 125 years.
Average Lifespan: Average lifespan refers to the average length of time that members of a population live. It is calculated by adding up the ages at death of all individuals in the population and dividing by the total number of individuals.
Life Expectancy: Life expectancy is a statistical measure that estimates the average number of years a person is expected to live. It is influenced by factors such as birth year and gender. In the United States, the life expectancy in 2015 was 77 years for males and 82 years for females.
Ageism: Ageism refers to the discrimination or prejudice that is based on a person's age, typically against older adults. It can manifest in various forms, such as stereotypes, negative attitudes, or unequal treatment.
Gerontology: Gerontology is the study of ageing and the processes and challenges associated with it. It encompasses various fields, including biology, psychology, sociology, and healthcare. Gerontologists study the physical, psychological, and social aspects of ageing to better understand the ageing process and improve the quality of life for older adults.