Demographic Change: Birth Rates, Death Rates and the Ageing Population
Demographic change concerns long-term shifts in the birth rate, death rate and age structure of the population, and the family and social consequences that follow. The birth rate has declined over the long term due to factors including wider access to contraception, women's increased participation in paid employment raising the opportunity cost of childbearing, the rising cost of raising a child, and a general shift towards smaller, more individually chosen family sizes rather than large families shaped by tradition or necessity. The death rate has fallen due to improved medical care, better nutrition and sanitation, and public health measures, meaning fewer people, especially infants, die before old age, though the rate of decline has slowed since these gains were largely secured earlier in the twentieth century. Together, a falling birth rate and a falling death rate combined with rising life expectancy have produced an ageing population, raising the dependency ratio, the proportion of the population who are retired or too young to work relative to those of working age, with consequences including greater strain on pension systems and health and social care services, alongside growing recognition of older people as a distinct and significant consumer group.
Before you start
Make sure you're comfortable with these topics first:
Method
- Separate the three linked trends clearly: falling birth rate, falling death rate, and the resulting ageing of the population, since a question may ask about causes of one specific trend or about the consequences of the combination.
- List birth rate causes precisely: wider access to contraception giving individuals control over family size, women's rising employment and education raising the opportunity cost of time spent on childcare, the rising direct cost of raising a child, and a cultural shift towards choosing smaller families.
- List death rate causes precisely: medical advances such as vaccination and improved treatment, better nutrition, improved sanitation and housing, and public health measures, and note the fastest declines historically came from reducing infant and child mortality specifically.
- Explain the dependency ratio clearly: it compares the number of people not in paid work, retired people and children, to the number of working-age people supporting them through taxation and unpaid care, and an ageing population raises this ratio by increasing the retired share.
- Connect demographic change back to family life directly: smaller families, later childbearing, more one and two-child households, and more adults providing informal care for ageing parents, sometimes called the 'sandwich generation' caught supporting both children and elderly parents at once.
- When an item gives specific data or a trend, identify whether it concerns birth rate, death rate or the combined age structure before explaining its cause or consequence, rather than writing a general answer about 'demographic change'.
- Evaluate consequences on more than one dimension: an ageing population creates fiscal and care pressures, but also economic opportunity in growing markets and services aimed at older consumers, and evaluate whether policy responses (raising the pension age, encouraging migration) are treated as solutions or as their own source of debate.
Worked example
Item A: National data showed the average number of children per woman had fallen steadily over several decades, alongside a rise in the average age at which women had their first child. Over the same period, the proportion of the population aged over sixty-five nearly doubled, and government reports expressed concern about the rising cost of pensions and social care. Applying material from Item A and your knowledge, analyse two consequences of demographic change for family life and social policy. (10 marks)
- Identify the item's two linked trends: a falling birth rate with later average motherhood, and a near doubling of the over-sixty-five population alongside pension and care cost concerns.
- Build the first consequence from the item: smaller families and later childbearing mean adult children are more likely to be supporting both young children and ageing parents simultaneously, the 'sandwich generation' pattern, straining family time and resources.
- Build the second consequence from the item using the dependency ratio: a rising over-sixty-five population relative to the working-age population increases the dependency ratio, directly explaining the item's reported concern about pension and social care costs, since fewer working-age taxpayers must support proportionately more retired people.
- Add one line of development: government responses, such as raising the state pension age, are a direct policy attempt to manage this changing ratio, showing demographic change has consequences beyond individual families, reaching into national policy debate.
- Check both points are drawn directly from the item's data rather than a general account of demographic change.
Practice questions
Try each question, then tap to reveal the answer.
Q1Give two reasons for the long-term decline in the birth rate.Show answer
Answer: Wider access to contraception giving individuals control over family size, and women's increased participation in paid employment and education raising the opportunity cost of childbearing.
Q2Give two reasons for the long-term decline in the death rate.Show answer
Answer: Medical advances such as vaccination and improved treatment, and improvements in nutrition, sanitation and public health.
Q3What is meant by the 'dependency ratio'?Show answer
Answer: The proportion of the population who are retired or too young to work, compared with the proportion of working age, who support them through taxation and unpaid care.
Q4Why does an ageing population raise the dependency ratio?Show answer
Answer: Because a growing share of the population is retired relative to the working-age population, so proportionately fewer people of working age are supporting a proportionately larger dependent group.
Q5What is meant by the 'sandwich generation'?Show answer
Answer: Adults who find themselves simultaneously supporting both their own children and their ageing parents, a pattern more common as people have children later and life expectancy rises.
Q6Give one social or economic consequence of an ageing population, other than pension or care costs.Show answer
Answer: The growth of a distinct 'older consumer' market, as businesses increasingly design products and services aimed specifically at a larger population of older, often more financially secure, retirees.
Exam-style questions
Written in the style of a A Level Sociology exam paper, with a full mark scheme.
Outline two reasons for the long-term decline in the birth rate.
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Item B: Health data showed infant mortality had fallen sharply across the twentieth century, particularly following the introduction of routine childhood vaccination and improvements in maternal healthcare, though the rate of further decline slowed considerably once these gains were largely achieved. Applying material from Item B, analyse two reasons for the decline in the death rate shown in the data. (10 marks)
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Item C: Government projections showed that within twenty years, the proportion of the population aged over sixty-five would rise further while the working-age population would grow much more slowly, leading analysts to warn of increasing pressure on the National Health Service and the state pension system, alongside a growing shortage of care workers relative to the number of older people needing support. Applying material from Item C and your knowledge, evaluate the view that an ageing population is mainly a problem for society. (20 marks)
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