Under Western Economics Stadium，Philips curve is a classic theory of macroeconomics。This theory is usually used to illustrate the relationship between unemployment and inflation rate during the economic cycle。For a long time，Philips curve has always been people's research economic growth、Important theoretical tools for inflation and unemployment rates。But scholars have discovered in recent years，The Philips curve can no longer explain the problem of unemployment rates and inflation in some countries。How to constantly revise and update the theory of economics，Let it better explain economic phenomena and serve economic development，Become a hot topic in the academic world。

The official website of the French International Outlook and Information Research Center recently released the research report written by Francois Geerolf, an assistant professor at the University of California Los Angeles Economics at the University of California.。Jerov proposed，The initial design of the Philips curve is insufficient，This may be the reason for the flat phenomenon of Philips curve in recent years。Around related issues，The reporter of this newspaper interviewed the relevant scholars。

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Bet365 lotto review Report mentioned，The Philips curve was first proposed by the New Zealand economist Olban William Phillips in 1958。This is a curve that can be used to represent the alternating relationship between the unemployment and the change rate of nominal wages。The so -called nominal salary is relatively actual salary，Also known as "currency wage"，refers to the number of currencies obtained by the laborer for the laborer。Philips Study after the British economic statistics from 1861-1913 and found it，When the unemployment rate is low，To attract and retain more talents，Enterprises will provide better salary and benefits，Names of wage growth rates higher; opposite，When the unemployment rate is high，Supply and demand relationship in the employment market is not good for job seekers，If the wage growth rate is low，It may even occur negative growth。

Later，Many economists have given a lot of theoretical interpretation of the Philips curve。American economist Paul A. Samuelson and Robert Merton Solow developed the Philips curve into an alternation between the unemployment and inflation rate between the unemployment rate and the inflation rate. The curve of the relationship。They think，Inflation theory driven according to cost，Name salary can indicate the inflation rate，High unemployment rate indicates that the economy is in the depression stage，At this time, the salary and price level are lower，Bet365 app download Therefore, the inflation rate is also low;，Low unemployment rate indicates that the economy is in the prosperity stage，At this time, the salary and price level are higher，The inflation rate is also at a high level。Therefore，Philips curve can also represent the alternate relationship between the unemployment rate and the inflation rate，and the changes in the unemployment rate and the changes in inflation rates are reverse。

But the Philips curve came out，It has also been questioned many times。To ensure its sustainability，Economists have made multiple amendments and adjustments to it。American economist Edmund Phelps and Milton Friedman proposed the "additional Felipus curve"。They think，The role of inflation expectations should be considered，When people change the expected value of inflation，Philips curve will also change。Natural unemployment rate refers to the unemployment rate under full employment，The unemployment rate of inflation will not cause inflation，It is also an unemployment rate when the employment market is in a state of stability of supply and demand。Inflation expectations will cause an increase in inflation rate，There is also a gap between the unemployment rate and the natural unemployment rate，Philips curve should reflect the relationship between the increase rate and this gap in the inflation rate。

Additional expected Philips curve also encountered challenges later。During the Internet bubble period bet365 best casino games in the late 1990s，The unemployment rate in the United States is far lower than its natural unemployment rate，But it did not bring too much inflation pressure。Enter the 21st century，The unemployment rate of the euro zone has also been close to its natural unemployment rate，But people have not observed obvious inflation pressure。After the financial crisis in 2008，Although the crisis is serious and the unemployment rate rises sharply，But the problem of currency tightening is not as serious as people think。From these situations，There may not be a stable contact between the unemployment rate and inflation。

　　The unemployment rate and inflation are not necessarily related

Researcher of the French International Outlook and Information Research Center Isabelle Bensidoun (Isabelle Bensidoun) told this reporter，Philips curve has an important impact on macroeconomic policies in many countries, especially monetary policy。Although the Philips curve has faced a certain challenge in the past few decades，But it is always an important content of economics research and teaching。According to the Philips curve，If you want to reduce the unemployment rate，You need to improve the level of inflation。This allows relevant agencies to develop short -term economic policies，Frequently facing the dilemma of choice between the unemployment rate and inflation，And they often choose to use loose monetary policy to stimulate demand，Improve employment Bet365 app download rate，This is the case when facing the crisis。This may cause economic overheating to a certain extent。During the period of economic depression，Want to increase the growth rate of GDP of a certain economy in the short term，Or a stimulus measure to make it far lower than the natural unemployment rate，In the end, it can only bring inflation screw，and endangers the economy's future debt repayment capacity。

In fact，Since the early 1980s，In the practice of economic activity, it is rarely observed to observe the typical Philips curve，The typical cases of the negative correlation between the unemployment rate and the inflation rate are rare.。Bangxi Duan believes，There is no inevitable connection between the unemployment rate and inflation。Under the influence of the Philips curve，People are used to thinking，When a certain product on the market is in short supply、When the price rises，Enterprises will hire more workers in order to increase production，The unemployment rate will decrease，Workers' salary will rise，Inflation and inflation appeared。But today with the rapid technology，When a large number of demand for a certain product or service appears on the market，Especially when the demand for products with high technical content is surging，Because the level of workers that temporarily increases may not meet the production requirements，Enterprises will be more inclined to make technical improvement Bet365 lotto review or innovation，Through more efficient production methods (such as automated production or use of robots) to meet market demand。Market demand for goods、Technical content of goods、The cost brought by R & D activities will increase，Under the common role of these factors，It is still possible that the price of commodity price rises or even inflation，but may not necessarily reduce the unemployment rate。

Jerov thinks，Look at the Philips curve from another angle，separate the unemployment rate from inflation，It has important significance。Because this does not need to make difficult choices between unemployment and inflation，Not only in the absence of a certain degree of inflation，Economy can grow steadily。The focus of promoting economic growth should be to enhance competitiveness，Improve the skills of workers and the ability to adapt to the employment market，Seeking full employment and performed sustainable、Reasonable investment。