In doing so I shall briefly outline three strands of quantity theory to emerge from this process and I shall point out their different emphases and focal points. The relationship between the supply of money and inflation, as well as deflation, is an important concept in economics.The quantity theory of money is a concept that can explain this connection, stating that there is a direct relationship between the supply of money in … In other words, the level of prices in the economy is directly proportional to the quantity of money … When this assumption holds good, there exists a proportional link between the changes in money supply and the changes in prices. One of the assumptions of the simple quantity theory of money is that output is fixed in the long run, which means the AS curve is vertical at all levels of Real GDP. First, the quantity theory assumes that changes in spending do not simply cause proportional changes in the money stock. The quantity theory of money assumes that the velocity and output remains constant. The quantity theory is a simple way to explaining why changes in money can disturb the rest of the economy. Sometimes, the theory is presented by splitting up average quantity of money (M) into two components, namely currency (M1) and banks money (M2) and their respective velocities, V1 and V2. When these two assumptions are made the Equation of Exchange becomes the Quantity Theory of Money which shows that there is an exact, proportional relationship between money supply and the price level. Fisher’s quantity theory of money is explained with the help of Figure 1. 7. In the short rim these principles of the Quantity Theory are not in accord with facts. Assumptions of the Quantity Theory. Panel A of the figure shows that as the quantity of money increases from О to M, the level of output also rises along the ОТ portion of the OTC curve. This article provides an overview and analysis of one of the first macroeconomic theories on record, the Quantity Theory of Money (QTM). The assumptions of the simple quantity theory of money are that velocity and output are constant. If these two assumptions hold true, then there is a strictly proportional link between changes in the money supply and changes in prices. One of the main weaknesses of Fisher’s quantity theory of money is that it neglects the role of the rate of interest as one of the causative factors between money and prices.

(A) and (B). Fisher’s equation of exchange is related to an equilibrium situation in which rate of interest is independent of the quantity of money. If these two assumptions hold true, then there is a strictly proportional link between changes in the money supply and changes in prices. Chapter 6 The Quantity Theory of Money Frank Hayes In this essay I wish to consider the quantity theory analysis and to extend this into a discussion of the major policy approaches to economic stabilization. Panel A of the figure shows the effect of changes in the quantity of money on the price level. This reformulated quantity theory of money is illustrated in Figure 67.1 (A) and (B) where OTC is the output curve relating to the quantity of money and PRC is the price curve relating to the quantity of money. For a better understanding and appreciation of Friedman’s modern quantity theory, it is necessary to state the major assumptions and beliefs of Friedman. The quantity theory of money states that the value of money is based on the amount of money in the economy. In actual life the price level and volume of production move up and down in a cyclical pattern. The quantity theory of money is based directly on the changes brought about by an increase in the money supply. This modifies the equation to . Unrealistic Assumptions: Changes in velocity are so small that for all practical purposes velocity can be assumed to be constant over long periods of time, thus resulting in a vertical AS curve. M stand for money supply, V is the velocity of money or the average frequency of transactions and the sum is the price and quantity of the good indexed by i but normally we will find it as:. Given the assumptions of the theory, MV= PT is an identity. To begin with, when the quantity of money is M, the price level is P. When the quantity of … It is complex because it attempts to quantify numerous economic variables into a single equation. M1V1 + M2V2 = PT. It is changes in money stock that are the cause, not the effect. However, it is a theory with a number of weaknesses, and it has always had critics who have questioned the assumptions on which it is based. The assumptions of the simple quantity theory of money are that velocity and output are constant. The quantity theory of money implies that a number of interactions are not possible. Finally, according to Crowther the Quantity Theory puts a mis­leading emphasis on the importance of the quantity of money as the cause of price changes and pays too much attention on the level of prices. First of all Friedman says that his quantity theory is a theory of demand for money and not a theory of output, income or prices.