Trade cycle is the result of :

Question

Accepted Answer

The correct option is 1:

Trade cycles, or business cycles, are the periodic fluctuations in aggregate economic activity that an economy experiences over time, consisting of phases like prosperity (boom), recession, depression (trough), and recovery. The most widely accepted theoretical explanation for the self-generating nature of these cycles, particularly in Keynesian and post-Keynesian models, is the interaction between the **Multiplier** and the **Accelerator**. The multiplier shows how an initial change in autonomous investment or government spending leads to a much larger change in national income. The accelerator, on the other hand, describes how an increase in consumption/output (driven by the multiplier effect) induces a disproportionately larger increase in investment. This combined effect—known as the Samuelson-Hicks model of business cycles—creates cumulative movements. During a boom, the multiplier leads to rising income, which triggers the accelerator to increase investment rapidly, reinforcing the boom. Conversely, during a downturn, the reverse process causes a downward spiral into recession.

The incorrect option is 2:
The interaction of the foreign trade multiplier and money multiplier is a much narrower concept. The foreign trade multiplier explains how changes in exports or imports affect national income in an open economy, and the money multiplier explains the process of money creation by banks, but their combined interaction is not the primary mechanism that explains the self-sustaining, cyclical phases of the domestic economy.

The incorrect option is 3:
Focusing only on the foreign trade multiplier is insufficient. While international trade can influence an economy's overall activity and exacerbate or soften a cycle, it is an external factor, not the fundamental internal engine responsible for generating the cyclical movement between investment and income across different phases.

The incorrect option is 4:
The money multiplier, which relates to changes in the money supply and credit creation, is a key determinant of monetary policy and liquidity. However, it operates within the financial system and is not, by itself, the complete mechanism that explains the fluctuations in real variables (like output, employment, and investment) that characterize the complete trade cycle.