2026 ACJC H2 Econs Paper 2 Q2 Prelim ANS

Essay Q2 Suggested Answers: 2 Across the world, governments intervene extensively in healthcare markets, recognising that the free market alone cannot be relied upon to allocate healthcare resources efficiently or equitably. (a) Explain the decision-making process of a rational consumer based on the marginalist principle, and one possible reason why such decisions may not always lead to an efficient allocation of resources in the market for healthcare. [10] Requirement 1: Rational consumers aim to maximise satisfaction by consuming at MB = MC A rational consumer is one who aims to maximise their total utility, or satisfaction, from the consumption of goods and services. In the context of healthcare, this means that a consumer will decide how much healthcare to consume, for example, how many medical consultations or health screenings to undergo, by weighing the marginal benefit (MB) against the marginal cost (MC) of each additional unit consumed. For a consumer, the marginal benefit (MB) refers to the additional satisfaction or utility derived from consuming one more unit of healthcare, such as the health improvement or peace of mind gained from an additional medical consultation. The marginal cost (MC) refers to the additional cost incurred by the consumer in obtaining that unit of healthcare, which is equivalent to the price paid out-of-pocket, as well as the opportunity cost of the next best alternative forgone. Applying the marginalist principle, a rational consumer will compare the MB and MC of each additional unit of healthcare consumed: When MB > MC , for example at quantity Q 1 , the additional unit of healthcare yields more benefit than it costs. Consuming this unit increases the consumer's total net benefit. Therefore, a rational consumer will choose to consume this additional unit, as doing so brings them closer to maximising their total satisfaction.

When MB < MC , for example at quantity Q 2 , the additional unit of healthcare costs more than the benefit it provides. Consuming this unit would reduce the consumer's total net benefit. Therefore, a rational consumer will not consume this additional unit, as it would make them worse off overall. When MB = MC at Q 0 , the additional unit of healthcare yields exactly as much benefit as it costs. At this point, the consumer's total net benefit is maximised. Consuming any more would reduce total net benefit (since MC > MB), and consuming any less would mean forgoing net gains (since MB > MC). Therefore, a rational consumer will consume up to the point where MB = MC, as this is the consumption level that maximises their total satisfaction. For example, a rational consumer deciding whether to go for an additional health screening will proceed with the screening if the health benefit (e.g. early detection of illness, increased life expectancy) outweighs the cost of the screening. They will stop consuming additional screenings once the marginal benefit of the next screening falls to equal its marginal cost. Thus, through the marginalist principle, rational consumers in the healthcare market will allocate their resources by consuming up to the point where MB = MC, thereby maximising their individual satisfaction. Requirement 2: Imperfect information as a reason why rational consumer decisions may not lead to efficient resource allocation in the healthcare market While rational consumers aim to maximise their satisfaction by consuming at MB = MC, this decision-making process can only lead to an efficient allocation of resources if consumers have accurate and complete information about the true costs and benefits of their consumption. In the healthcare market, however, this condition is frequently violated due to imperfect information , specifically the tendency of consumers to underestimate the actual private benefits of healthcare consumption. Consumers may be unaware of the full extent of the benefits that healthcare services provide to themselves. For example, a young and seemingly healthy adult may not realise that going for regular health screenings could enable the early detection of underlying conditions, significantly increasing their chances of recovery and extending their life expectancy. As a result, the consumer's perceived marginal private benefit (MPB perceived) is lower than the actual marginal private benefit (MPB actual) of consuming healthcare.

Because rational consumers base their decisions on their perceived, rather than actual, costs and benefits, they will consume at the quantity where MPB (perceived) = MPC , which corresponds to the market equilibrium output of Q M . However, the true socially optimal level of consumption, where MPB (actual) = MPC , corresponds to a higher output level of Q S . This means that consumers under-consume healthcare by Q M Q S units relative to the allocatively efficient level. For every unit of healthcare between Q M and Q S , the actual marginal private benefit exceeds the marginal private cost, meaning that additional consumption would have increased the consumer's welfare. Since these units are not consumed, there is a deadweight loss equal to the shaded area in the diagram below, representing the welfare that could have been gained but was not. The market therefore fails to achieve an efficient allocation of resources, as too few resources are directed towards healthcare production and consumption. Thus, even though consumers are behaving rationally given the information available to them, the presence of imperfect information causes a divergence between perceived and actual benefits. This leads to systematic under-consumption of healthcare, resulting in allocative inefficiency and justifying the need for government intervention in the healthcare market.

(b) Discuss the effectiveness of government policies to achieve both an efficient allocation of resources and an equitable outcome in the market for healthcare. [15] Requirement 1: Subsidies can be used to achieve both allocative efficiency and equity in the healthcare market The free market under-allocates resources to healthca