Economic Growth, Technological Change, and Creative Destruction

Introduction to Economic Growth

Economic growth refers to the sustained increase in a country's output of goods and services, typically measured by real GDP per capita. Understanding the sources and effects of economic growth is central to macroeconomics, as it determines long-term improvements in living standards.

• Economic growth is not inevitable: Historical periods of stagnation have occurred where output did not increase.

• Key question: Why do some countries achieve rapid increases in income per capita while others do not?

• Model of economic growth: Economists use models to explain and predict growth patterns.

Growth Over Time and Around the World

Historical Patterns of Economic Growth

For most of human history, living standards remained largely unchanged. Significant economic growth began only in the last two centuries.

• Pre-Industrial Era: Standard of living was essentially the same for centuries.

• Modern Growth: Two centuries of growth have dramatically increased living standards.

Annual Growth Rates for the World Economy

Growth rates in real GDP per capita have varied over time, with notable increases following the Industrial Revolution.

• Small differences in growth rates can lead to large differences in living standards over time.

• Example: Over 50 years, a 1.61% growth rate leads to a 122% increase in GDP per capita, while a 2.2% rate leads to a 197% increase.

The Industrial Revolution

Origins and Impact

The Industrial Revolution marked the beginning of sustained economic growth, driven by the application of mechanical power to production.

• Definition: The Industrial Revolution refers to the period beginning in England around 1750 when mechanical power was applied to production.

• Before the Industrial Revolution: Production relied on human and animal labor.

• After the Industrial Revolution: Countries like England, the United States, France, and Germany experienced rapid economic growth.

Why Did the Industrial Revolution Begin in England?

Institutional changes in England, such as the Glorious Revolution of 1688, set the stage for economic growth.

• Parliamentary control: Parliament, not the king, controlled the government, ensuring property rights and independent courts.

• Protection of property rights: Entrepreneurs were incentivized to invest and innovate.

Key Concepts in Economic Growth

Labor Productivity

Labor productivity is the quantity of goods and services produced by one worker or one hour of work. It is a central determinant of economic growth.

• Formula:

• Factors affecting labor productivity:

  • Quantity of capital per hour worked

  • Level of technology

Technological Change

Technological change refers to positive or negative changes in the ability of a country to produce output with a given quantity of inputs.

• Sources of technological change:

  • Improvements in machinery and equipment

  • Increases in human capital (knowledge and skills)

  • Better organization and management of production

Creative Destruction

Schumpeter's Model

Joseph Schumpeter emphasized the role of entrepreneurs in economic growth through creative destruction, where new innovations replace outdated industries.

• Creative destruction: The process by which new products and technologies replace old ones, driving economic progress.

• Example: The rise of Netflix and the decline of Blockbuster Video.

• Entrepreneurs: Central to bringing together factors of production in innovative ways.

Summary Table: Growth Rates and Living Standards

Additional info: The table illustrates how small differences in growth rates can lead to large differences in living standards over time.

Conclusion

Economic growth is a complex process influenced by technological change, institutional factors, and creative destruction. Understanding these concepts is essential for analyzing differences in living standards across countries and over time.