1.2 Economic systems and efficiency: market, planned and mixed economies, the role of the price mechanism in resource allocation, and allocative, productive and dynamic efficiency.

What this dot point is asking

OCR wants you to compare the three ways economies answer the what, how and for whom questions (free-market, command and mixed systems), to explain how the price mechanism allocates resources through its three functions, and to define and apply the main types of economic efficiency.

The three economic systems

Every economy answers three questions, what to produce, how to produce it and for whom, and the answer defines its system.

In practice no economy is purely one type. The UK is a mixed economy in which markets dominate but the state provides defence, healthcare and education and regulates many markets. The relative size of the public and private sectors is a key way to describe and compare mixed economies.

Free-market strengths: the price mechanism coordinates millions of decisions efficiently, competition drives down costs and spurs innovation, and consumer sovereignty rewards firms that meet wants. Free-market weaknesses: it under-provides public goods, over-produces goods with negative externalities, ignores equity and can create monopoly power.

Command-economy strengths: it can prioritise equity, provide public goods directly and mobilise resources for national goals. Command-economy weaknesses: central planners lack the information that prices carry, so allocation is often inefficient, shortages and surpluses are common, and there is weak incentive to innovate or cut costs.

The price mechanism

In a market economy, prices coordinate decentralised decisions. OCR expects the three functions.

• Rationing. When a good becomes scarce, its price rises, which chokes off demand and rations the limited supply to those willing and able to pay. A poor coffee harvest raises prices and rations the smaller crop.
• Signalling. Prices carry information about relative scarcity and value. A rising price signals to producers that the good is more valued (or scarcer) and to consumers that it is dearer, prompting both to adjust.
• Incentive. A higher price rewards producers, giving them an incentive to supply more and to move resources into that market. A persistently high price for electric vehicles draws firms and capital into the sector.

Together these functions move resources toward where they are most valued without any central direction, the "invisible hand" of the market.

Types of efficiency

These ideas recur throughout microeconomics. Perfect competition is held up as allocatively and productively efficient; monopoly is criticised for allocative inefficiency ($P > MC$) but may deliver dynamic efficiency if its profits fund research and development. A well-functioning market tends toward allocative and productive efficiency; market failures and monopoly power pull it away.

Examples in context

• Transition economies. The collapse of central planning in Eastern Europe after 1989 showed how command economies struggled with the information and incentive problems that prices solve, prompting moves toward mixed economies.
• The UK as a mixed economy. Markets allocate most goods, but the NHS, state schools and defence are publicly provided, and regulators such as Ofgem and the CMA shape markets.
• Surge pricing. Ride-hailing apps raising fares at peak times is the rationing and incentive functions in action, drawing more drivers out while rationing rides to those who value them most.

Try this

Q1. Distinguish between a command economy and a mixed economy. [4 marks]

• Cue. Command: state owns resources and plans output; mixed: markets allocate most resources with government correcting market failure.

Q2. Explain the difference between allocative and productive efficiency. [4 marks]

• Cue. Allocative: $P = MC$, right goods made; productive: lowest average cost, goods made cheaply.