Financial vs. real economy
According to the
classical dichotomy, the nominal and real economy could be analyzed separately. Mainstream economists often see financial markets as a means of equilibrating savings and investments, intertemporally allocated towards their best usage anchored by fundamentals within the economy. Banks thus act as an intermediary between savings and investments. Financial markets according to the
efficient-market hypothesis are deemed to be efficient based on all available information. The market interest rate is determined by the
supply and demand for
loanable funds. There is some disagreement as to whether the financial sector and asset markets impact the real economy. Economist Mathias Binswanger demonstrated that since the 1980s, the results of the stock market do not seem to lead to increases in real economic activity, in contrast to the results found in Fama (1990), who found that increases in the stock market appear to lead to increases in the real economy. Binswanger attributes this difference based on the possibility of speculative bubbles for the economy during the 1980s and 1990s. Through analyzing seven countries, economist Kateřina Krchnivá found that an increase in the stock market predicts an increase in the real economy with the lag of one quarter, without any feedback relationship existing the other way around. Irving Fischer developed the theory of
debt deflation during the Great Depression to explain the linkages between the financial sector and the real economy. In his model, recessions and depressions are caused by an overall rise in the real debt level thanks to deflation. As a result, debt liquidation occurs followed by distress selling and a contraction of deposit currency. This leads to a further decrease in the price level and a wave of business bankruptcies, creating a drop in output, trade and employment. Pessimism and loss of confidence occur, leading to further hoarding and slower circulation of currency causing complicated disturbances in the interest rate. Fischer's remedy for when this sequence of events occur is to reflate prices back to its initial level, preventing that "vicious spiral" of debt deflation. Alternatively,
John Maynard Keynes proposed the idea of
liquidity preference as a means to explain how changes in investors' liquidity based on their unstable preferences in financial markets could lead to changes in real variables like output and employment. Thus, under conditions of fundamental uncertainty, liquidity becomes highly attractive to investors.
Keynesian economics is concerned with ways of shaping investors' liquidity preference through monetary and
fiscal policy channels in order to achieve Full Employment. The monetary authority can encourage more private investment through a reduction in the interest rate, while fiscal policy, a positive trade balance and housing credit expansions can also lead to further growth in the real economy. ==References==