Cambridge O Level2281

Households

Economics 2281 Chapter Notes

What this chapter covers

Households - Influences on households’ spending, saving and borrowing
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In this chapter

  1. 1Household Financial Decisions
  2. 2Influences on Household Decisions
  3. 3Understanding Population Structure
  4. 4The Dependency Ratio

1. Household Financial Decisions

A household is a person or group of people living together who make joint financial decisions. The core economic decision for any household is how to allocate its disposable income. Disposable income is the money left over after direct taxes (like income tax) have been paid. Households must choose between spending this income on goods and services (consumption) or saving it for the future. They can also choose to spend more than their current income by borrowing money, which creates a debt that must be repaid later with interest. These decisions on spending, saving, and borrowing are fundamental to understanding how an economy functions.

Key term

Disposable Income: The income remaining for a person or household to spend or save after all direct taxes have been paid.

Examiner insight

Examiners reward answers that can clearly link different life stages (e.g., student, parent, retiree) to typical patterns of spending, saving, and borrowing.

Common pitfall

Confusing income with wealth. Income is a flow of money earned over a period (e.g., weekly wage), while wealth is a stock of assets owned at a point in time (e.g., savings, property).

Worked example 14 marks

The table shows the weekly spending patterns of low-income and high-income households in the UK. Explain why the proportion of income spent on 'Food' and 'Recreation' differs between the two groups.

  1. 1

    Step 1: Identify the spending on Food. Low-income households spend a larger proportion of their income on basic necessities like food. This is because food is a need, and even poor households must spend a certain amount on it. For high-income households, this same amount of spending represents a much smaller fraction of their total income.

  2. 2

    Step 2: Identify the spending on Recreation. High-income households spend a larger proportion of their income on recreation and culture. These are considered luxury or non-essential items. As income rises, households can afford to spend more on wants after their needs are met.

  3. 3

    Step 3: Conclude by linking to Engel's Law. This pattern is consistent with Engel's Law, which states that as income rises, the proportion of income spent on food falls, even if the absolute amount of spending on food increases.

Recap

  • A household is an economic unit that makes decisions about spending, saving, and borrowing.
  • Disposable income is the money available after direct taxes are paid.
  • Households face a choice between consumption (spending) and saving.
  • Borrowing allows a household to spend more than its current income but creates future debt.
  • Spending patterns differ significantly between high-income and low-income households.

Quick check

  1. What is the term for income left after direct taxes have been paid?1 mark
  2. If a household spends more than its disposable income, what must it be doing?1 mark

2. Influences on Household Decisions

A household's decisions about how much to spend, save, or borrow are influenced by several key factors. Higher income generally leads to more spending and more saving. The rate of interest is crucial: high interest rates make saving more attractive and borrowing more expensive, which tends to reduce spending. Conversely, low interest rates encourage borrowing and spending, and make saving less rewarding. A person's age and life stage are also very important; young people often borrow for education and housing, middle-aged people save heavily for retirement, and retired people often 'dis-save' by spending their accumulated wealth. Finally, consumer confidence plays a big role. If people feel secure in their jobs and optimistic about the economy, they are more likely to spend and borrow. If they are worried, they will tend to save more.

Key term

Interest Rate: The cost of borrowing money or the reward for saving money, expressed as a percentage of the sum borrowed or saved.

Examiner insight

Students should be able to explain both how and why a change in a factor like interest rates affects all three decisions: spending, saving, and borrowing.

Common pitfall

Stating that higher interest rates reduce spending without explaining the mechanism (i.e., that borrowing becomes more expensive for consumers and saving becomes more attractive).

Fun fact

The 'wealth effect' can also work in reverse. A stock market crash can make people feel poorer, causing them to cut spending and save more, even if their income hasn't changed.

Worked example 14 marks

An article states that household debt in South Korea increased due to 'low interest rates and a strong stock market'. Explain how these two factors would lead to an increase in household debt.

  1. 1

    Step 1: Explain the effect of low interest rates. Low interest rates reduce the cost of borrowing. This makes loans, such as mortgages and personal loans, cheaper to repay. Households are therefore more willing and able to take on debt to finance purchases like homes or cars.

  2. 2

    Step 2: Explain the effect of a strong stock market. A strong stock market increases the value of assets (shares) owned by households. This creates a 'wealth effect', where people feel richer and more financially secure. This increased confidence and perceived wealth can lead them to borrow more money, believing they can easily handle the repayments.

Recap

  • Higher income allows for greater spending and saving.
  • Higher interest rates encourage saving and discourage borrowing and spending.
  • Lower interest rates discourage saving and encourage borrowing and spending.
  • Spending, saving and borrowing patterns change significantly over a person's lifetime.
  • High consumer confidence about the future leads to more spending and borrowing.

Quick check

  1. State one reason why a household might save more if interest rates rise.1 mark
  2. How does high consumer confidence typically affect household spending?1 mark

3. Understanding Population Structure

Demography is the study of human populations. The structure of a country's population has major economic implications. Key characteristics include:

  1. Age Distribution: The proportion of people in different age groups (e.g., under 15, 15-64, over 65). Developing countries tend to have very young populations, while developed countries have ageing populations.
  2. Sex Distribution: The balance of males and females. This can affect the size of the labour force and social trends.
  3. Geographic Distribution: Where people live. A key trend is urbanization, the movement of people from rural areas to cities, especially in emerging economies.
  4. Occupational Distribution: The sectors in which people work. This is typically split into the primary (agriculture, mining), secondary (manufacturing), and tertiary (services) sectors. As economies develop, the workforce shifts from the primary to the secondary and finally to the tertiary sector.

Key term

Demography: The statistical study of human populations, including their size, structure, distribution, and how these change over time.

Examiner insight

Examiners look for the ability to not just describe the differences in population structures between developed and developing countries, but also to explain the economic consequences of these differences.

Fun fact

More than half of the world's population now lives in urban areas, a dramatic shift from a century ago when less than 20% did.

Worked example 16 marks

Compare the likely population structure of a developing country like Niger with a developed country like Japan, considering age distribution and occupational distribution.

  1. 1

    Step 1: Compare age distribution. Niger, with one of the world's highest birth rates, will have a very young population. This is shown by a population pyramid with a very wide base. Japan, with a low birth rate and long life expectancy, has an ageing population, with a high proportion of elderly people and a narrow base on its population pyramid.

  2. 2

    Step 2: Compare occupational distribution. In Niger, a large proportion of the labour force will be employed in the primary sector, mainly in subsistence agriculture. In Japan, the vast majority of the workforce is employed in the tertiary (services) sector, with a smaller number in the secondary (advanced manufacturing) sector and very few in the primary sector.

  3. 3

    Step 3: Link to economic implications. Niger's young population creates a high dependency ratio and pressure on education services. Japan's ageing population puts pressure on healthcare and pension systems and can lead to a shrinking labour force.

Recap

  • Demography is the study of population characteristics.
  • Age distribution shows the proportion of young, working-age, and elderly people.
  • Geographic distribution describes where people live, such as the split between urban and rural areas.
  • Occupational distribution shows where people work, across primary, secondary, and tertiary sectors.
  • Developing and developed countries have very different population structures.

Quick check

  1. Name the three main sectors of an economy used to describe occupational distribution.2 marks

4. The Dependency Ratio

The dependency ratio is a key measure derived from a country's age structure. It compares the number of people who are not in the workforce (the dependents) with the number of people who are in the workforce (the working population or labour force). The dependent population typically includes children under the age of 15 and adults over the age of 65. A high dependency ratio means that each worker has to support more non-workers. This can place a great strain on an economy. For example, a high youth dependency ratio requires significant government spending on education and healthcare for children. A high old-age dependency ratio puts pressure on state pensions and healthcare services for the elderly. In both cases, a high ratio may require the working population to pay higher taxes to fund these services.

Dependency Ratio = (Dependent Population / Working Population)

Key term

Dependency Ratio: A measure comparing the size of the non-working population (dependents) to the size of the working population (labour force).

Examiner insight

High-scoring answers not only calculate the ratio but also interpret what the number means for an economy, such as the pressure on government finances and the standard of living.

Common pitfall

Forgetting that the dependent population includes both the young and the old, and focusing only on one group when answering a general question.

Fun fact

In Japan, adult diapers now outsell baby diapers, a stark indicator of its rapidly ageing population and high old-age dependency ratio.

Worked example 13 marks

In 2011, South Africa had a total population of 49 million. The working population was 17 million. Calculate the dependency ratio.

  1. 1

    Step 1: Find the dependent population. Dependent Population = Total Population - Working Population.

  2. 2

    Step 2: Substitute the values. Dependent Population = 49 million - 17 million = 32 million.

  3. 3

    Step 3: Use the formula for the dependency ratio. Dependency Ratio = Dependent Population / Working Population.

  4. 4

    Step 4: Calculate the final ratio. Dependency Ratio = 32 million / 17 million = 1.88 (or 1.9 to one decimal place). This means each worker supports themselves plus 1.88 other people.

Worked example 24 marks

Explain two economic problems that might be caused by a rising dependency ratio in a developed country.

  1. 1

    Step 1: Identify the cause in a developed country. A rising dependency ratio in a developed country is usually caused by an ageing population (more elderly dependents) and a low birth rate.

  2. 2

    Step 2: Explain the first problem - Pressure on public finances. A larger elderly population increases government spending on state pensions and healthcare. This increased spending has to be funded by taxes on a relatively smaller working population, potentially leading to higher tax rates or government debt.

  3. 3

    Step 3: Explain the second problem - Labour shortages. An ageing population can lead to a shrinking labour force. This can cause labour shortages, push up wages (potentially causing inflation), and reduce the economy's potential output and economic growth.

Recap

  • The dependency ratio measures the burden on the working population.
  • Dependents are typically the young (under 15) and the old (over 65).
  • A high dependency ratio can strain government finances for services like education, pensions, and healthcare.
  • Developing countries often have high youth dependency, while developed countries face rising old-age dependency.
  • The formula is: Dependency Ratio = Dependent Population / Working Population.

Quick check

  1. A country has a working population of 20 million and a dependent population of 10 million. What is its dependency ratio?2 marks

End-of-chapter exercise

Test yourself on the whole chapter. Work through these before moving on.

  1. Define 'disposable income' and state the two main choices a household has for its use.2 marks
  2. A country has a total population of 80 million. The labour force is 50 million. Calculate the dependency ratio.3 marks
  3. Explain two reasons why a household's spending might increase if interest rates fall.4 marks
  4. Distinguish between the occupational distribution and the age distribution of a population.4 marks
  5. Analyse two economic consequences of a rapid increase in urbanization in a developing country.4 marks
  6. Explain why the spending and saving patterns of a married couple with young children are likely to differ from those of a retired couple.6 marks
  7. Analyse why a government might be concerned about a high level of household debt.6 marks
  8. The table below shows data for two countries, A and B. | Country | Birth Rate (per 1000) | % Population over 65 | |---|---|---| | A | 45 | 3% | | B | 8 | 22% | Using the data, analyse the likely differences in the dependency ratios of Country A and Country B.6 marks
  9. Discuss whether an increase in a country's population is always beneficial for its economy.8 marks
  10. Evaluate the measures a government could take to manage the economic problems caused by an ageing population.8 marks

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