Medium6 marksExtended Response
How markets workMarket FailurePositive ExternalitiesMerit GoodsGovernment Intervention

AQA GCSE · Question 15 · How markets work

Figure 1
Many economists believe that government spending should continue to be used to provide healthcare. This helps solve a potential market failure because healthcare generates positive externalities. Without government intervention, healthcare may not be provided in sufficient quantities. In the UK, the government provides healthcare mainly free of charge to all UK citizens. This is expensive, with over £100 billion spent by the government in 2019 on healthcare – which in 2020 and beyond will rise significantly due to the COVID-19 pandemic.

Using Figure 1, analyse how the government might correct the market failure caused by healthcare not being provided in sufficient quantities.

How to approach this question

1. Identify the market failure from the text (under-provision of healthcare due to positive externalities). 2. Explain why this market failure occurs in a free market (social benefits > private benefits). 3. Using the text, identify the government's solution (direct provision, free at the point of use). 4. Analyse how this solution works to correct the market failure by increasing the quantity of healthcare consumed towards the socially optimal level.

Full Answer

The market failure identified is the under-provision of healthcare, which is a merit good that generates positive externalities. This means the social benefit of healthcare is greater than the private benefit. In a free market, individuals would only consume up to the point where their private benefit equals the price, leading to under-consumption and under-provision from society's point of view. The government corrects this by intervening in the market. As stated in Figure 1, the UK government 'provides healthcare mainly free of charge'. This direct provision ensures that healthcare is available to everyone, regardless of their ability to pay. By funding healthcare through general taxation (over £100 billion in 2019), the government increases the quantity supplied and consumed to a level closer to the socially optimal amount. This helps to internalise the positive externalities, such as a healthier, more productive workforce and reduced spread of communicable diseases, benefiting society as a whole, not just the individual receiving care.
Healthcare is considered a merit good, which means it provides greater benefits to society than the individual consumer may realise. These wider benefits are called positive externalities. For example, vaccinations not only protect the individual but also help create herd immunity, protecting the entire community. Because individuals in a free market only consider their private benefits, they would demand less healthcare than is socially optimal. This leads to under-consumption and under-provision, which is a market failure. The government intervenes to correct this. As the text states, it directly provides healthcare, funding it through taxation. This removes the price barrier for consumers, increasing consumption to a level that accounts for the positive externalities and is closer to the socially desirable level, thus correcting the market failure.

Common mistakes

Simply repeating information from the text without adding any economic analysis. For example, just stating 'the government spends £100 billion to provide healthcare'. The key is to explain *why* this is necessary in terms of market failure theory.

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