The Phillips Machine may, in this era of super-computers modelling the economy, appear an outdated artefact. However, when it was first unveiled at the London School of Economics in 1949 it caused a sensation. The Phillips Machine is a model of the economy which uses water, pumps, valves and, in the case of the original, an electric motor scavenged from the windscreen wiper of a Lancaster bomber. For some photos of a Phillips Machine at the Science Museum, follow the links below:
Phillip’s Economic Computer (1949)
Enginuity article (Cambridge Engineering Department)
The computer model that once explained the British economy Guardian (8/5/08)
The computer model that once explained the British economy Guardian (8/5/08) (Cartoon)
Questions
| 1. |
Explain what is meant by the term ‘economic model’. |
| 2. |
What were the limitations of the Phillips machine? Assess whether the Phillips machine could be of value to modern economists. |
| 3. |
Discuss the value of economic models to policy makers when formulating economic policy. |
The principal measure of inflation, the consumer prices index, is calculated from price changes in a basket of goods. The composition of this basket is changed each year to reflect changes in consumer spending patterns. 2008 sees smoothies, USB storage devices and muffins coming into the basket, while ready meals and 35mm camera film have had their day and leave the basket of goods.
What’s in and what’s out in 2008 Guardian (17/3/08)
Fruit smoothies in, ready meals out Guardian (17/3/08)
Smoothie pour into cost of living basket Guardian (17/3/08)
Let them eat sourdough bread, olives and sun-dried tomatoes Guardian (17/3/08)
Smoothies join basket of goods used to calculate inflation Times Online (18/3/08)
Questions
| 1. |
Explain what is meant by a weighted index. Why does the consumer prices index (CPI) need to be a weighted index? |
| 2. |
Explain how the CPI is calculated. |
| 3. |
Discuss why annual percentage changes in the CPI may not be an appropriate measure of inflation for all groups in society. |
Rapid economic growth in China has pushed inflation to an 11-year high of 8.7% in February 2008. This was driven significantly by higher food prices, with the price of pork rising by nearly 64%. This higher level of inflation has led to concerns that policy may need to be tightened.
Sweet and sour pork The Economist (13/3/08)
China inflation hits fresh high BBC News Online (11/3/08)
Chinese inflation alarms authorities Guardian (11/3/08)
Chinese warn on decade-high inflation Times Online (5/3/08)
Chinese inflation shoots to 11-year high Times Online (11/3/07)
China tries to apply brakes to economy Guardian (4/3/08)
Questions
| 1. |
What are the main causes of rising inflation in China? |
| 2. |
Assess the extent to which policy needs to be tightened to counter the rising level of inflation in China. What would be the possible downsides of such a policy? |
| 3. |
Discuss possible policy changes that could be implemented by the Chinese government to reduce the level of inflation. |
China’s rate of inflation has hit an 11-year high, partly due to the cold winter weather destroying crops and pushing up food prices. However, inflationary pressure has been growing for some time with rapid economic growth and the resultant pressure on resources. This is despite six increases in interest rates in the past thirteen months.
Families feel pinch as inflation threatens economic miracle Guardian (25/2/08)
Chinese inflation soars to an 11-year high Times Online (20/2/08)
Chinese inflation hits 11 year high Times Online (19/2/08)
Questions
| 1. |
Explain the principal factors that have led to the increase in inflation in China. |
| 2. |
“Policymakers in China will likely try to tighten monetary policy further, with more reserve requirement ratio hikes, faster Chinese yuan appreciation, and more heavy handed controls over bank lending.” Discuss the likely effectiveness of these policy measures. |
| 3. |
Assess the extent to which changes in food prices will affect the overall level of aggregate demand in the Chinese economy. |
Inflationary expectations can be an important determinant of the actual level of inflation and so the Bank of England monitor people’s perceptions of inflation closely. Expectations of inflation are currently at their highest level in eight years.
Questions
| 1. |
Explain the transmission mechanism by which higher inflationary expectations are translated into inflation. |
| 2. |
What are the key determinants of inflationary expectations? |
| 3. |
Discuss strategies that (a) the Bank of England and (b) the government can adopt to reduce inflationary expectations. |