Understanding Regional Inequalities: Myrdal's Theory

Gunnar Myrdal's theory of Circular Cumulative Causation is a powerful framework used to understand how differences in economic development between regions, both within a country (national level) and between countries (international level), can arise and persist over time. Instead of assuming that economies automatically move towards balance, Myrdal argued that economic changes tend to create a cumulative process where initial advantages or disadvantages in certain regions become reinforced.

The Process of Circular Cumulative Causation

Myrdal's central idea is that economic development is not a smooth process that leads to equilibrium. Instead, factors interact in a circular way, where a change in one factor causes changes in others, which in turn reinforces the initial change. This can lead to an upward spiral of growth in some regions and a downward spiral of stagnation or decline in others, thereby generating and widening regional inequalities.

Backwash Effects and Spread Effects: The Core Mechanisms

According to Myrdal (1957), the generation of regional inequalities is primarily driven by two sets of effects that originate from growing economic centers:

• Backwash Effects: These are negative effects on the regions surrounding the growing center (the periphery). They involve the movement of resources away from the poorer regions towards the richer center. This weakens the periphery and strengthens the core, increasing inequality.
• Spread Effects: These are positive effects that transmit growth impulses from the center to the surrounding regions. They involve the spread of economic activity, technology, and demand from the core outwards. These effects can help stimulate growth in the periphery and potentially reduce inequality.

How Backwash Effects Generate Inequality

Backwash effects are the key drivers that pull resources and opportunities into the already growing regions, often at the expense of others. These effects include:

• Migration: Skilled and young workers tend to move from poorer regions to richer ones seeking better jobs and opportunities. This leaves the poorer regions with a less dynamic workforce.
• Capital Movements: Savings and investment funds from the periphery tend to flow towards the more profitable opportunities in the growing centers. This drains capital from the regions that need it most for development.
• Trade: The growth of industries in the center can outcompete traditional industries in the periphery, leading to their decline and job losses in the periphery. Trade patterns often favor the center.
• Services: Social and economic services like education, healthcare, and infrastructure tend to concentrate in the growing centers, further attracting people and businesses and disadvantaging peripheral areas.

When backwash effects are strong, they create a cumulative process of decline in the periphery and cumulative growth in the core, leading directly to increased regional inequalities.

How Spread Effects Can Influence Inequality

Spread effects are the forces that can potentially counteract backwash effects and transmit growth outwards. These include:

• Increased Demand: As the central region grows and incomes rise, there is increased demand for goods and services, some of which may be produced in the surrounding regions.
• Technology Transfer: New technologies and innovations developed in the core can spread to the periphery, improving productivity there.
• Investment Spillover: Businesses in the core might invest in the periphery to access raw materials, cheaper labor, or new markets.
• Infrastructure Development: Investment in transport and communication infrastructure, often driven by the needs of the core, can also benefit the periphery by improving connectivity.

However, Myrdal argued that spread effects are often weaker than backwash effects, especially in the early stages of development or in less developed countries. The relative strength of backwash versus spread effects determines whether regional inequalities widen, stabilize, or narrow over time.

Myrdal's Explanation of Inequality Generation

Myrdal's theory explains that regional inequalities are generated because the free play of market forces, driven by cumulative causation, tends to favor regions that already have an initial advantage (like better resources, infrastructure, or historical head starts). Backwash effects concentrate resources and opportunities in these favorable regions, while spread effects are often too weak to significantly benefit the disadvantaged regions. This creates a self-reinforcing pattern of unequal development at both national and international scales.

Revision Table: Myrdal's Backwash and Spread Effects

Additional Information: Myrdal's Theory in Context

Myrdal's theory is significant because it challenged traditional economic ideas that expected market forces to naturally lead to regional convergence. He argued that state intervention and policy are often necessary to strengthen spread effects or counteract backwash effects to achieve more balanced regional development. This contrasts with theories that emphasize balanced growth across all sectors and regions simultaneously.

His work highlights the social and institutional factors that interact with economic ones to shape development patterns. It remains a crucial framework for understanding persistent regional disparities in both developed and developing countries.