The Examiner's Vault: Monopoly Power and Allocative Inefficiency (CIE 9708 Paper 4)
Updated: Sep 2
The monopoly question is one of the most predictable essays in Paper 4. It appears in some form almost every single exam sitting, and yet the examiner report consistently notes that most candidates fail to identify the mathematical condition for allocative inefficiency.
The Question:
**"Explain how monopoly power can result in allocative inefficiency and evaluate the effectiveness of deregulation in addressing this form of market failure."** *(20 Marks)*
📝 The Bullet Point Plan:
Define monopoly power (price maker, high barriers to entry).
Define allocative inefficiency (P > MC).
Explain profit maximisation at MC = MR, leading to restricted output.
Evaluate deregulation: benefits of contestability vs natural monopoly limitations.
✍️ The Basic Answer:
[DEFINE] Monopoly power refers to the ability of a firm to act as a price maker, typically occurring when a firm dominates a market with high barriers to entry. Allocative inefficiency occurs when resources are not distributed according to consumer preferences, technically where Price (P) does not equal Marginal Cost (MC).
[EXPLAIN] A firm with monopoly power faces a downward-sloping demand curve. To maximize profits, the monopolist restricts output to the point where MC = MR. Because the MR curve lies below the AR curve, the price charged (read off the AR curve) is higher than the marginal cost. This means P > MC, and a deadweight welfare loss exists.
[APPLY] For instance, patented pharmaceutical firms charge extremely high prices for essential drugs, extracting consumer surplus and leaving some patients priced out of the market entirely.
The full answer, free
The text above scores you 8-10 marks (Level 2). To reach Level 4 (16-20 marks), you need the diagram, the deregulation evaluation, and the critical distinction between standard monopolies and natural monopolies.
The model answer for this exact question is on the portal, with the monopoly diagram with AR, MR, MC and AC, the full model answer and the natural monopoly discussion. There is no payment and no account. Open the free notes and practice.
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