The definition and measurement of economic growth

Economic growth describes the expansion of an economy's overall production over a period. It is typically measured using real gross domestic product (GDP), which accounts for inflation to show genuine increases in output.

Key aspects of economic growth measurement

• Growth relative to population - If output rises more quickly than the number of people, income per person increases, potentially allowing better access to products and services.
• Per capita income - This average figure indicates general prosperity but hides details about how wealth is spread among individuals.

Impacts of economic growth on living standards

While economic growth often boosts prosperity, it does not always lead to better living conditions for everyone. Factors like how benefits are distributed and other social elements play a significant role.

Limitations of economic growth in improving living standards

• Unequal distribution - Expansion that widens the gap between rich and poor can create unstable conditions, as many people see no improvement in their circumstances.
• Environmental damage - Growth that harms natural surroundings, such as through pollution, reduces quality of life for those affected.
• Jobless growth - Advances like robotics and artificial intelligence can increase output without creating jobs, leaving some without income gains.
• Broader factors - Living standards involve elements beyond output, such as health, education, and equality, which growth metrics often overlook.
• Connection to human development - True improvements relate to overall well-being, as noted by economist Simon Kuznets, who highlighted that growth alone is a flawed indicator of progress.

Environmental impacts of economic growth

Economic expansion can both harm and potentially benefit the environment, depending on how it is managed. Rapid growth often increases pollution and resource use, leading to problems like habitat loss.

Some theories suggest patterns in this relationship, but evidence varies.

Environmental Kuznets curve (EKC)

• This idea proposes an inverted U-shaped link where degradation worsens initially with development but improves later as wealth allows for cleaner practices.
• Applies mainly to local issues, such as household air quality.
• Does not hold for widespread problems like carbon emissions.

Growth ignoring these effects is seen as unsustainable, potentially limiting future prosperity.

Policies for sustainable economic growth

To ensure long-term benefits, growth must protect the environment. Various strategies help achieve this balance.

Key policy tools for sustainability

• Removing harmful subsidies - Ending support for fossil fuels and damaging activities reduces environmental harm.
• Carbon pricing - Introducing taxes on emissions encourages lower pollution.
• Cap and trade systems - These set limits on pollutants and allow trading of allowances to promote efficient reductions.
• Investment in green technology - Funding innovations like renewable energy supports cleaner production.
• International agreements - Complying with commitments, such as those in the Paris Agreement, helps coordinate global efforts.

These measures aim to make growth "future-proof," as described by the United Nations Development Programme (UNDP).

Effects of economic growth on income inequality

Economic expansion can either narrow or widen income gaps, influenced by how it occurs and the policies in place. Disposable income, which is earnings from work plus benefits minus taxes, is a key measure here.

Ways economic growth reduces income inequality

Growth provides governments with extra revenue, known as a fiscal dividend, to fund supportive measures.

Examples of supportive measures:

• Social safety nets - Enhancing pensions, unemployment support, and benefits protects vulnerable groups.
• Cash transfers - Direct payments to those in need help balance incomes.
• Rural investments - Improving farming efficiency, water systems, and transport in countryside areas boosts opportunities for poorer communities.
• Access to services - Expanding education and healthcare for low-income groups promotes equality.

Countries with progressive taxes and strong welfare, like those in northern Europe, show that such approaches do not hinder long-term growth.

Ways economic growth increases income inequality

Certain conditions can make expansion favour the wealthy.

Conditions that increase inequality:

• Concentration in sectors or areas - Benefits focused in industries or urban zones, such as coastal regions, leave others behind.
• Skill-biased progress - Technology favouring educated workers widens gaps.
• Market power - Rising corporate monopolies concentrate wealth.
• Trade changes - Opening markets can displace jobs without adequate support.
• Policy shifts - Less progressive taxes and reduced government involvement exacerbate divides.

Research from bodies like the International Monetary Fund (IMF) and the Luxemburg Income Study Center indicates that high inequality, as seen in places like the USA among developed nations, can make growth less stable over time.