Questions: The Dual Economy: Agricultural and Industrial Sectors

Question 1

A government channels all development investment into urban manufacturing, reasoning that industrialization is the engine of growth and agricultural investment yields lower returns. According to dual-economy theory, what is a likely consequence of this strategy?

• A. Rural workers will automatically migrate to cities, solving both agricultural surplus labor and urban labor shortage simultaneously
• B. Agricultural productivity stagnates, food prices rise, and higher food costs erode industrial workers' real wages — slowing the industrial growth the strategy sought
• C. The agricultural sector will modernize on its own as urban demand signals filter back to rural areas
• D. The wage gap between sectors will close faster because industry's higher productivity dominates the economy

Answer: (B)

This is the central policy trap of dual-economy neglect. Industrial workers must eat: if agricultural productivity stagnates while cities grow, food supply fails to keep pace with urban demand, driving up food prices. Rising food prices reduce the real purchasing power of industrial wages even if nominal wages are rising. Workers demand higher nominal wages to compensate, squeezing industrial profit margins and slowing investment. The most successful developing economies (South Korea, Taiwan, Vietnam) invested in agricultural productivity alongside industrial capacity, not instead of it.

Question 2

Why do wage gaps between agricultural and industrial sectors persist longer than a simple model of free labor mobility would predict?

• A. Agricultural workers rationally prefer rural life and choose not to migrate, keeping rural wages artificially low
• B. Labor market segmentation — caused by geographic distance, information barriers, skill mismatches, and policy restrictions — slows equalization even when migration occurs
• C. Industrial wages are set by government policy rather than market forces, so migration cannot equalize them
• D. In well-functioning markets, wages equalize almost immediately once migration begins

Answer: (B)

Simple models assume workers instantly move to wherever wages are higher. In reality, moving costs money, requires information about job availability, demands skills that rural migrants may lack, and is often restricted by policy (China's hukou system being a prominent example). Even after decades of massive rural-to-urban migration in China, significant wage gaps persist between rural and urban areas. These frictions mean the dual economy coexists for extended periods — sometimes generations — rather than dissolving quickly as theory might suggest.

Question 3

In many developing countries, output per worker in industry is five to ten times higher than in agriculture, creating powerful wage differentials that drive rural-to-urban migration.

• T. True
• F. False

Answer: True

The productivity gap between sectors in developing economies is frequently very large — far larger than the modest differences between sectors in advanced economies. This magnitude explains why rural-to-urban migration can be so intense: workers are moving toward wages that may be multiples of what they earn in agriculture, not marginal improvements. The gap also explains why the transition is not instantaneous — absorbing all low-productivity rural labor into high-productivity industry requires enormous capital investment and skill development, which take decades.

Question 4

The most effective development strategies choose either agricultural modernization or industrial build-up, since investing in both sectors simultaneously dilutes resources and slows growth in both.

• T. True
• F. False

Answer: False

This is the key strategic misconception dual-economy theory refutes. Agricultural and industrial development are complementary, not competing. Rising agricultural productivity frees labor for industry and keeps food prices stable; expanding industry provides employment for labor freed from farms and generates income that increases demand for food. Countries that neglected one sector (e.g., African nations that underinvested in agriculture during industrialization drives) experienced food crises and wage pressure. Successful transformers like South Korea and Vietnam pursued both tracks in parallel.

Question 5

Why does neglecting agricultural productivity while pursuing rapid industrialization create a self-defeating cycle for economic development?

Model answer: Industry requires workers, and workers must eat. If agricultural productivity does not keep pace with urban population growth, food supply tightens and food prices rise. Rising food prices reduce the real wages of industrial workers, who then demand higher nominal wages to maintain living standards. Higher nominal wages compress industrial profit margins, reducing the investable surplus that would otherwise fund further industrial expansion. At the same time, stagnant rural incomes limit the domestic market for industrial goods. The strategy meant to accelerate industrialization thus undermines itself through food-price inflation and compressed profits.

This dynamic is sometimes called the 'agricultural neglect trap.' Historical evidence supports it strongly: industrial pushes without agricultural foundations (as in some 1960s–70s African and Latin American development strategies) produced urban food crises and labor unrest, while the East Asian successes (Green Revolution plus export manufacturing) maintained both. Dual-economy theory's core contribution is identifying food prices as the hidden transmission mechanism connecting agricultural performance to industrial outcomes.