Understanding Population Ageing

Population ageing is a demographic phenomenon that occurs when the median age of a country or region rises. This happens because of rising life expectancy and/or declining birth rates. Essentially, it means that the proportion of older people in the population is increasing compared to the proportion of younger people.

Defining the Age Group for Population Ageing

When we talk about the ageing of the population, we are referring to an increase in the relative size of the older segments of society. Demographers and international organizations typically define the older population using certain age thresholds.

• Option 1: Below 50 years. This group includes working-age adults and younger people. An increase in this proportion would not represent ageing.
• Option 3: Between 15-60 years. This is generally considered the working-age population. While changes in this group's proportion are significant, population ageing focuses specifically on the *older* end of the age spectrum.
• Option 4: Below 15 years. This is the young dependent population. A greater proportion in this group would indicate a younger, not ageing, population.
• Option 2: Above 60 years. This age group, or sometimes 65 years and above, is the standard benchmark used globally to define the older population. A greater proportion of the total population falling into this category signifies population ageing.

Therefore, the ageing of the population specifically represents the greater proportion of the population that is in the older age brackets, most commonly defined as above 60 or 65 years.

In summary, a society is considered to be experiencing population ageing when the percentage of people in the older age group, such as those above 60 or 65 years, increases relative to the younger age groups.

Revision Table: Key Concepts in Population Ageing

Additional Information on Demographic Ageing

Population ageing is a significant global demographic trend with wide-ranging social, economic, and health implications. As the proportion of older people grows, societies face challenges and opportunities related to healthcare systems, pension schemes, labor markets, and social support structures. Understanding which age group defines this phenomenon is crucial for demographic analysis and policy making. While definitions can vary slightly between countries or studies, the threshold of 60 or 65 years is widely accepted for identifying the older population segment driving this trend.