These topics could however constitute grounds for future research projects, supporting as such the academic development. These questions refer to the following:
1. What are the history, evolution and importance of inflation and unemployment?
2. What are the characteristics of the Phillips curve in other global regions, such as the United States or Japan?
3. The Phillips curve in China is scattered and inconsistent and this is attributed to the highly volatile inflation of the emergent economy. Is there a particular trend to explain the curve based on the level of economic development?
3. Inflation, unemployment and their definitions
This third chapter of the research process focuses on the introduction and presentation of the concepts of inflation and unemployment in a highly comprehensive manner. Emphasis is placed on the definition of the two concepts, their measures and the issues they raise.
3.1. The problem of inflation
3.1.1. The definition of inflation
Inflation is often a commonly used and heard term and it is generally described in terms of purchasing prices, consumer indexes or purchasing power. Inflation in essence refers to the increase in prices, in comparison to the real economic growth, and the resulting ability of the population to make purchases. High levels of inflation increase the prices and reduce purchasing power, whereas lower levels of inflation reduce prices and increase purchasing powers. The general political scope of nations is to decrease the inflation or maintain it at a low level. The specialized literature presents the reader with a wide array of definitions for inflation, such as those below:
"Inflation is a process of continually rising prices, or equivalently, of continually falling value of money."
This definition is blamed as lacking specifics, but is often accepted as it is relevant for most situations.
Investopedia defines inflation as "the rate at which the general level of prices for goods and services is rising, and, subsequently, purchasing power is falling. Central banks attempt to stop severe inflation, along with severe deflation, in an attempt to keep the excessive growth of prices to a minimum."
Inflation represents a "sustained rise in the aggregate, or general, price level."
Joyce Hart then explains that in order for inflation to occur, prices have to increase considerably and over an extended period of time. And the prices of all necessary commodities have to suffer increases. The author of How inflation works notes: "Inflation is more than just an increase in the cost of goods and services. For economists to declare that a country's economy is indeed in a state of inflation, the cost of food, gasoline, and other important goods that people need have to not only rise significantly, but this rise also has to last over a relatively long period of time."
In order to best understand the mechanism of inflation, one should consider the following example: a bottle of wine now costs $20, and the annual inflation is of 3 per cent. By the end of the current year, the new price of the bottle of wine would be adjusted by inflation, namely it would increase. In a context in which:
Adjusted price = initial price + initial price x inflation rate,
the new price of the bottle of wine would be of $20.6, retrieved with the aid of the following equation:
New price = 20 + 20 x 0.03 = 20 + 0.06 = $20.6
If during the following year, the inflation rate increases to a 10 per cent rate for instance, the price of the bottle of wine would be even higher. The new price would be as such adjusted by the 10 per cent inflation rate and it would come to sum up a total of $22.66, price retrieved with the aid of the following equation:
New price = 20.6 + 20.6 x 0.1 = 20.6 x 1.1 = $22.66
3.1.2. Measures of inflation
3.1.2.1. How inflation is measured
Inflation is generically measured with the use of two specific models:
The GDP deflator
The Consumer Price Index
The deflator of the gross domestic product is understood as the weighted average price of all products and services delivered by a national economy. In other words, it represents the most comprehensive and clearest means of establishing and assessing national price levels.
The Consumer Price Index is the weighted average price of the products and services purchased within a traditional household. The GDP deflator is the most comprehensive and complex tool, but it is used less commonly than the CPI. This is explained by the fact that the GPD deflator also considers the products and services purchased by economic agents or by the government, whereas the CPI only selects the products and services bought...
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