Keynesian Theory of Trade Cycles
John Maynard Keynes, one of the most influential economists of the 20th century, never worked out a pure theory of trade cycles, though he made significant contributions to the trade cycle theory. Keynes states, “The trade cycle can be described and analyzed in terms of the fluctuations of the marginal efficiency of capital relatively to the rate of interest.” According to Keynes, the level of income and employment in a capitalist economy depends upon effective demand, comprising of total consumption and investment expenditure. Changes in total expenditure will imply changes in effective demand and will lead to changes in income and employment in the country. Therefore, in the Keynesian system fluctuations in total expenditure are responsible for fluctuations in business activity. Now, according to Keynes, consumption expenditure is relatively stable, and consequently it is the fluctuations in the volume of investment that are responsible for changes in the level of Continue reading