2.1.2 - inflation Flashcards
What is inflation?
A sustained increase in the general level of prices - average prices are rising
What is deflation?
A sustained decrease in the GPL - average prices are falling
What is disinflation?
A fall in the rate of inflation - average prices are increasing but at a slower rate
What is hyperinflation?
A rate both unpredictable and sufficiently high enough to disrupt the functions of money
What is the CPI?
The Consumer Price Index is the percentage change in a weighted average of a representative basket of goods and services.
What is the basket of goods?
Hundreds of everyday items that the ONS keeps track of the prices of.
- weighted according to the proportion of income spent on particular categories
- the top 4% and pensioners are excluded to avoid statistical distortion
- items changed periodically to avoid statistical distortions
What are the limitations of CPI?
- the CPI excludes many housing costs and may show lower inflation, less accurate
- the CPI includes all households - general measure
- doesn’t take into account changes in the quality of goods and services
- different consumption habits from households - not representative
- problems comparing over time due to change in the composition of the basket
- geographical differences and wage patterns
- statistical error
- substitution bias - XED
- shrinkflation
What is an alternative measure of inflation to the CPI?
The RPI - retail prices index
What does the government use RPI and CPI for?
The government uses RPI to calculate increases in funds they collect eg. rises in rail fares, duties on alcohol and tobacco, student loan repayments. It uses the CPI to work out increases in money they pay out eg. benefits, pensions, tax thresholds. This is because the RPI is around one percent higher than the CPI.
What are the problems with RPI?
- the use of RPI added up to £16,000 to the cost of a student loan
- moves away from the RPI measure are costly and complex as it is used across public and private sectors
Comparison of CPI to RPI
- excludes various housing costs (council tax)
- covers a broader section of society
- different mathematical formula means it is always lower than the RPI
- uses a geometric mean, arithmetic mean is used for the RPI
What is demand-pull inflation?
As the economy verges towards full employment, scarcity of FOPs puts upward pressure on prices. Increase in GDP usually leads to an increase in the GPL.
What do monetarists argue about demand-pull inflation?
They argue that increases in AD are caused by an expansion of the money supply rather than an automonus change in the components of AD. Cheaper borrowing costs stimulate credit fuelled consumption and investment by firms.
What do non-monetarists suggest can lead to demand-pull inflation?
Increases in consumption and AD can be explained by cuts to income tax rates which increase disposable income. Also, higher investment may be the result of improved business confidence.
What is cost-push inflation?
This results from a left shift in AS due to higher production costs. Firms increase prices to maintain profit margins. eg. increased unit labour costs, input costs, indirect taxes, depreciation of the currency.