Profit max and alternative objectives
Firms are assumed to maximise profit (total revenue minus total cost), but may instead pursue revenue maximisation (highest TR), sales maximisation (most units while breaking even), market-share growth, satisficing (a satisfactory, not maximum, profit) or ethical/CSR objectives. Which fits depends on ownership, competitive pressure and the principal-agent split between managers and shareholders.
The four market structures
Perfect competition — many sellers, identical product, no barriers, price takers (AR = MR = price), normal profit long-run. Monopolistic competition — many sellers, differentiated products, low barriers, some price power, normal profit long-run. Oligopoly — a few large firms, high barriers, interdependence, possible collusion. Monopoly — one seller, very high barriers, price maker, supernormal profit possible long-run.
Barriers to entry sustain market power
Barriers to entry stop new firms competing away supernormal profit. Common types: economies of scale, brand loyalty, legal barriers (patents, licences), high sunk costs, and control of scarce resources. Their height separates perfect competition (no barriers — normal profit) from monopoly (very high barriers — supernormal profit persists). Oligopolists may use limit or predatory pricing to deter entry.
Drawn from real examiner reports.
Non-profit objectives can be rational
A recurring Analyse error is calling a firm with social or ethical objectives "irrational." Non-profit objectives can be strategically rational: a cafe offering free children's meals may win repeat custom, staff morale and publicity that raise long-run profit. Explain WHY the objective is chosen and its consequence — using the extract data — not just name it.
June 2024 Paper 1, Q1(i): "the ability to analyse and apply the data from the extract differentiated candidates' marks."
Use the extract, do not copy it
Copying or paraphrasing the stimulus is capped at the lower levels: "simply copying the extract is not going to lead to high marks." Restating a figure (a 10.15% wage rise) proves nothing alone. Strong answers DEPLOY the data — e.g. set it against 17% inflation to argue workers are worse off in real terms — then evaluate. Use the data, never recite it.
June 2024 Paper 1, Q2(g): "simply copying the extract...is not going to lead to high marks — high level arguments need to use the evidence, rather than repeat it."
Oligopoly is not monopoly
Describing a monopoly as "a few large firms" (that is oligopoly) or an oligopoly as "no competition at all" (that is monopoly) loses marks. Monopoly = one firm, very high barriers, price maker; oligopoly = a few dominant firms, high barriers, interdependence and possible collusion. Both have high barriers, but firm numbers and pricing differ.
Monopolistic competition is not monopoly
The similar names mislead. Monopolistic competition has MANY firms, differentiated products and LOW barriers, so supernormal profit is competed away in the long run. A monopoly has ONE firm and VERY HIGH barriers, so it can keep supernormal profit. Do not treat "monopolistic" as a synonym for monopoly — the number of firms and barrier height are opposite.
Price taker vs price maker
Only a perfectly competitive firm is a pure price taker (AR = MR = price) — it must accept the market price. Firms in monopolistic competition, oligopoly and monopoly all have SOME price-setting power. So "a monopolistically competitive firm has no price power" is wrong, and so is "a monopolist must accept the market price".
Revenue max is not profit max
Maximising total revenue is not maximising profit. Profit maximisation produces where MC = MR. Revenue maximisation chases the highest TR (price × quantity) even if profit falls — it can mean selling extra units whose cost exceeds their added revenue. A firm chasing revenue or sales may earn LESS profit than it could. Match the objective the question specifies.
Describe: one point plus development
For a 2-mark Describe, "only one reason is required for one mark" — the second mark comes only from developing it, not from a second reason. Give one point and develop it (why, and its effect). Listing three separate reasons still earns only one mark.
Analyse: one side, apply the data
Analyse carries no AO4 (evaluation) marks, so no counter-argument is needed. Build two or three sustained chains on ONE side — point, because, therefore — and APPLY the extract data rather than reciting it. Save the balance for Assess and Evaluate.
Match command word to the mark tariff
Match the command word to the tariff. Define (2) = meaning only. Describe (2) = one point plus development. Explain = define, apply, show the mechanism. Analyse (9) = one-sided chains. Assess/Evaluate (12) = both sides plus a supported judgement.
Compare structures on four features
Learn the structures as a grid: number of firms, product type, barriers to entry, price-setting power. When a question names a firm, place it in the right structure using these four features and reason from there — not in the abstract.
Profit maximisation — the traditional assumption. A firm maximises profit when it produces the output at which marginal cost equals marginal revenue (MC = MR). Profit = Total Revenue (TR) minus Total Cost (TC).
Alternative objectives — firms may depart from profit maximisation for rational reasons:
| Objective | What it means | Who pursues it and why |
|---|---|---|
| Revenue maximisation | Maximise TR, even if profit falls | Managers paid on sales turnover |
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