The fundamental economic problem of scarcity and choice

Scarcity is a core issue in economics, meaning that resources are limited while human wants are unlimited. This forces all economies—whether low-income, middle-income, or high-income—to make choices about how to use resources efficiently.

Choices must be made to prioritise certain goods and services over others. These choices occur in every type of economy, but the method of making them varies depending on the economic system.

An economic system is the way in which households, firms, and governments decide how to allocate resources to address scarcity.

The three resource allocation questions

All economic systems must answer three basic questions to manage scarcity and make choices about resource use.

Key questions in resource allocation:

1. What goods and services are to be produced? - This involves deciding which items to prioritise.
2. How are the goods and services to be produced? - This covers the methods and resources used.
3. Who should receive the goods and services? - This determines distribution.

The main types of economic systems

Economic systems can be classified into three main types: market economies, planned economies, and mixed economies. Each type addresses the resource allocation questions differently, based on the role of the government and the market mechanism.

No economy is purely one type; they exist on a spectrum with varying degrees of market freedom and state control.

Features and consequences of market economies

In a market economy, resource allocation is driven mainly by the forces of demand and supply through the price mechanism, with limited government involvement.

How the price mechanism works

• Excess supply causes prices to fall.
• Lower prices make firms less willing to produce.
• Reduced supply leads to price increases.
• Higher prices encourage more firms to enter the market.
• Supply increases, creating a self-regulating cycle.

Government role and market failure

The government ideally has no direct role in market operations, only intervening when the price mechanism fails. Market failure happens when resources are not allocated efficiently.

Examples of market failure:

• Underprovision of healthcare
• Absence of essential services
• Monopolistic behaviour

In reality, no pure market economy exists.

Features and consequences of planned economies

A planned economy, also known as a command or centrally planned economy, relies on the government to make all key decisions about resource allocation.

Key features of planned economies

• The central government controls what is produced.
• Production targets are set for key sectors.
• Price controls are imposed on essential items.
• Wages are state-determined.
• Productive resources and property are mostly state-owned.
• Private enterprise is limited to small-scale activities.

Consequences of planned economies

Basic goods are often subsidised, leading to artificially low prices. This creates excess demand over supply, resulting in shortages and queuing. There is limited consumer choice. Examples include Cuba and North Korea, where these features are prominent.

Features and consequences of mixed economies

A mixed economy combines elements of both market and planned systems, with roles for both the private and public sectors in resource allocation. This is the most common system in the world today.

Key features of mixed economies

Most productive resources are privately owned, but some are publicly owned. Decisions involve interactions between firms, workers, and government through markets.

Trends in mixed economies including privatisation

Privatisation involves transferring resources from public to private ownership. This trend has been notable in emerging economies, such as those in Central and Eastern Europe.

Mixed economies vary on a spectrum, with differences in:

• The balance between market and state allocation
• Levels of government control over production