The Macroeconomic Environment Flashcards
A4 Macro-economic factors
(a) Define macroeconomic policy and explain its objectives.
(b) Explain the main determinants of the level of business activity in the economy and how variations in the level of business activity affect individuals, households and businesses.
(c) Explain the impact of economic issues on the individual, the household and the business:
(i) Inflation
(ii) Unemployment
(iii) Stagnation
(iv) International payments disequilibrium
(d) Describe the main types of economic policy that may be implemented by government and supra-national bodies to maximise economic welfare.
(e) Recognise the impact of fiscal and monetary policy measures on the individual, the household and businesses.
- The Structure And Objectives of the Economy
- The Structure And Objectives of the Economy
Macroeconomics is the study of the aggregated effects of the decisions of individual economic units (such as households or businesses). It looks at a complete national economy, or the international
economic system as a whole.
Macroeconomic policy describes the policies and actions a government takes to control economic
issues, including economic growth, inflation, employment and trade performance.
We look in detail at macroeconomic policy and objectives later in this chapter (in Section 8). We now
turn our attention to the flow of income and expenditure in an economy.
Income and expenditure flows 1
There is a circular flow of income in an economy, which means that expenditure, output and income will
all have the same total value.
Firms must pay households for the factors of production (this generally means that firms pay wages to members of households) and households must
pay firms for goods and services. The income of firms is the sales revenue from the sales of goods
and services.
This creates a circular flow of income and expenditure, as illustrated in Figure 1. This is a basic closed
economy, without foreign trade. It assumes the economy has only two sectors (firms and households),
with no government intervention and no imports or exports. In this model, we assume that households
spend all that they earn (in economics this spending is known as consumption), and all the firms’ goods
and services are sold to the households.
Income and expenditure flows 2
Figure 1 Circular flow of income, see OneNote
Households earn income because they have provided labour which enables firms to provide goods and
services. The income earned is used as expenditure on these goods and services that are made.
(a) The total sales value of goods produced should equal the total expenditure on goods, assuming
that all goods that are produced are also sold.
(b) The amount of expenditure should also equal the total income of households, because it is
households that consume the goods and they must have income to afford to pay for them.
At this stage we are assuming there are no withdrawals from, or injections into, the circular flow of
income.
Withdrawals and injections into the circular flow of income
Now we assume that there are withdrawals from the circular flow of income (savings, taxation, import
expenditure) and injections into the circular flow (investment, government spending, export income).
Our simplified diagram of the circular flow of income in Figure 1 needs to be amended to allow for these
two things.
Be aware that saving is different from investment. Saving simply means withdrawing money from
circulation. Think of it as cash kept in a money box rather than being put into a bank to earn interest.
Whereas investment covers expenditure on capital items, such as plant, machinery, roads and houses.
Figure 2 Circular flow of income showing withdrawals and injections, see OneNote
The important point to note is that changes in behaviour of one of the components of the circular flow (for example, investment) can lead to significant changes in economic performance as a whole.
- Factors Which Affect the Economy
- Factors Which Affect the Economy
The economy is rarely in a stable state because of the various changing factors which influence it. These
include investment levels, the multiplier effect, inflation, savings, confidence, interest rates and
exchange rates.
The economy is explained by the various factors that influence it, such as investment levels, the multiplier effect, inflation, savings, confidence, interest rates and exchange rates. These factors are subject to change which means that the economy is rarely in a stable state. Economists use the business cycle (explained later in the chapter) to describe the fluctuating level of activity in the economy.
The multiplier in the national economy
The multiplier involves the process of circulation of income in the national economy, whereby an
injection of a certain size leads to a much larger increase in national income. An initial increase in
expenditure will have a snowball effect, leading to further and further expenditures in the economy.
Since total expenditure in the economy is one way of measuring national income, it follows that an initial
increase in expenditure will cause an even larger increase in national income. The increase in national
income will be a multiple of the initial increase in spending, with the size of the multiple depending on
such factors as what proportion of any new investment is spent or what proportion is saved.
If you find this hard to visualise, think of an increase in government spending on the construction of roads. The government would spend money paying firms of road contractors, who in turn will purchase raw materials from suppliers, and subcontract other work. All these firms employ workers who will receive wages that they can spend on goods and services of other firms. The new roads in turn might stimulate new economic activity, for example amongst road hauliers, house builders and estate agents.
Depending on the size of the multiplier, an increase in investment would therefore have repercussions
throughout the economy, increasing the size of the national income by a multiple of the size of the
original increase in investment.
Aggregate supply and demand
Two of the main problems in the economy are inflation and unemployment. In order to understand how
these problems arise, it is first necessary to understand aggregate demand, aggregate supply and how these combine to determine the level of national income and prices in the economy.
No Note
Aggregate supply and demand - Aggregate demand
The total demand in the economy for goods and services is called the aggregate demand and it is made up of several components of the circular flow. These components include consumption, investment,
government spending and exports minus imports. Put simply, the aggregate demand curve represents
the sum of all the demand curves for individuals and businesses in a country.
Figure 3 The aggregate supply and demand model
Figure 3 shows that the aggregate demand curve slopes from left to right (ie demand will rise as prices
fall because people can afford more) but may shift as shown. A shift may be due to a factor such as an
increase or decrease in consumer confidence. This is explained below.
Aggregate supply and demand - Aggregate supply
The aggregate supply refers to the ability of the economy to produce goods and services. Aggregate
supply is positively related to the price level. This is because a price rise will make more profitable sales
and encourage organisations to increase their output. The aggregate supply curve slopes upwards from
left to right and does not shift in the short term, as shown in Figure 3.
Where the aggregate demand curve intersects with the aggregate supply curve, the total demand for
goods and services in the economy is equal to the total supply of goods and services in the economy.
(This is known as the equilibrium level of national income.)
Note that the graph highlights the fact that a change in either the aggregate supply or demand will have
an effect on the price level and the national income. Assuming that employment levels are related to
national income levels, the model shows how unemployment and inflation (a change in price level)
could arise.
Aggregate supply and demand - A shift in aggregate demand
Say, for example, that the equilibrium level is currently where national income = Y0 and price = P0 .
Then suppose there is a drop in consumer confidence so consumers stop spending (ie demand falls).
The new equilibrium would be where national income = Y1 and where price = P1.
If, on the other hand, consumer confidence increased (for example due to more access to affordable credit), consumers would buy more (an increase in demand) and so the new equilibrium would be where national income = Y2 and price = P2.
- The Determination of National Income
Equilibrium national income is determined using aggregate supply and aggregate demand analysis.
Aggregate demand and supply equilibrium
Aggregate demand (AD) is total planned or desired consumption demand in the economy for consumer goods and services and also for capital goods, no matter whether the buyers are households, firms or government.
Full-employment national income
If one aim of a country’s economic policy is full employment, then the ideal equilibrium level of national income will be where AD and AS are in balance at the full employment level of national income, without any inflationary gap – in other words, where aggregate demand at current price levels is exactly sufficient to encourage firms to produce at an output capacity where the country’s resources are fully
employed.
Inflationary gaps
In a situation where resources are already fully employed, there may be an inflationary gap since
increases in demand will cause price changes, but no variations in real output.
A shift in demand or supply will not only change the national income, it will also change price levels.
Example
If you are not sure about this point, a simple numerical example might help to explain it better. Suppose
that in Ruritania there is full employment and all other economic resources are fully employed. The
country produces 1,000 units of output with these resources. Total expenditure (that is, aggregate
demand) in the economy is 100,000 Ruritanian dollars, or 100 dollars per unit. The country does not have any external trade, and so it cannot obtain extra goods by importing them. Because of pay rises and easier credit terms for consumers, total expenditure now rises to 120,000 Ruritanian dollars. The economy is fully employed, and cannot produce more than 1,000 units. If expenditure rises by 20%, to buy the same number of units, it follows that prices must rise by 20% too. In other words, when an economy is at full employment, any increase in aggregate demand will result in price inflation.
Deflationary gap
In a situation where there is unemployment of resources there is said to be a deflationary gap. Prices are fairly constant and real output changes as aggregate demand varies. A deflationary gap can be described as the extent to which the aggregate demand function will have to shift upward to produce the full employment level of national income.
Stagflation
In the 1970s there was a problem with stagflation: a combination of unacceptably high unemployment,
unacceptably high inflation and low/negative economic growth. One of the causes was diagnosed as the major rises in the price of crude oil that took place. The cost of energy rose and this had the effect of rendering some production unprofitable. National income fell, and both prices and unemployment rose. Any long-term major increase in costs (a price shock) is likely to have this effect.
Summary
An equilibrium national income will be reached where aggregate demand equals aggregate supply. There
are two possible equilibria.
(a) One is at a level of demand which exceeds the productive capabilities of the economy at full
employment, and there is insufficient output capacity in the economy to meet demand at current prices. There is then an inflationary gap.
(b) The other is at a level of employment which is below the full employment level of national income. The difference between actual national income and full employment national income is called a deflationary gap. To create full employment, the total national income (expenditure) must be increased by the amount of the deflationary gap.
- The Business Cycle
Business cycles or trade cycles are the continual sequence of rapid growth in national income, followed
by a slowdown in growth and then a fall in national income (recession). After this recession comes
growth again, and when this has reached a peak, the cycle turns into recession once more.
Phases in the business cycle
Four main phases of the business cycle can be distinguished. Recession Recovery Depression Boom
Recession tends to occur quickly, while recovery is typically a slower process.
Diagrammatic explanation 1
At point A in the diagram below, the economy is entering a recession. In the recession phase, consumer demand falls and many investment projects already undertaken begin to look unprofitable. Orders will be cut, inventory levels will be reduced and business failures will occur as firms find themselves unable to
sell their goods. Production and employment will fall. The general price level will begin to fall. Business
and consumer confidence are diminished and investment remains low, while the economic outlook
appears to be poor. Eventually, in the absence of any stimulus to aggregate demand, a period of full
depression sets in and the economy will reach point B.
Figure 4 The business cycle, see OneNote
Diagrammatic explanation 2
At point C the economy has reached the recovery phase of the cycle. Once begun, the phase of recovery is likely to quicken as confidence returns. Output, employment and income will all begin to rise. Rising
production, sales and profit levels will lead to optimistic business expectations, and new investment will be more readily undertaken. The rising level of demand can be met through increased production by
bringing existing capacity into use and by hiring unemployed labour. The average price level will remain constant or begin to rise slowly.
In the recovery phase, decisions to purchase new materials and machinery may lead to benefits in
efficiency from new technology. This can enhance the relative rate of economic growth in the recovery
phase once it is underway.
Diagrammatic explanation 3
As recovery proceeds, the output level climbs above its trend path, reaching point D, in the boom phase
of the cycle. During the boom, capacity and labour will become fully utilised. This may cause bottlenecks in some industries which are unable to meet increases in demand, for example because they have no spare capacity or they lack certain categories of skilled labour, or they face shortages of key material inputs. Further rises in demand will, therefore, tend to be met by increases in prices rather than by increases in production. In general, business will be profitable, with few firms facing losses. Expectations of the future may be very optimistic and the level of investment expenditure high.
It can be argued that wide fluctuations in levels of economic activity are damaging to the overall
economic well-being of society. The inflation and speculation which accompanies boom periods may be
inequitable in their impact on different sections of the population, while the bottom of the trade cycle
may bring high unemployment. Governments generally seek to stabilise the economic system, trying to
avoid the distortions of a widely fluctuating trade cycle.
Inflation
Inflation is the name given to an increase in price levels generally. It is also manifest in the decline in the purchasing power of money.
Historically, there have been very few periods when inflation has not been present. We discuss below
why high rates of inflation are considered to be harmful. However, it is important to remember that
deflation (falling prices) is normally associated with low rates of growth and even recession. It would
seem that a healthy economy may require some inflation. Certainly, if an economy is to grow, the money supply must expand, and the presence of a low level of inflation will ensure that growth is not hampered by a shortage of liquid funds.
(Liquidity is the ease with which assets can be converted into cash.)
Why is inflation a problem?
An economic policy objective which now has a central place in the policy approaches of the governments of many developed countries is that of stable prices.
Why is a high rate of price inflation harmful and undesirable?
Why is inflation a problem? - Redistribution of income and wealth
Inflation leads to a redistribution of income and wealth in ways which may be undesirable.
Redistribution of wealth might take place from accounts payable to accounts receivable. This is because debts lose ‘real’ value with inflation. For example, if you owed $1,000, and prices then doubled, you would still owe $1,000, but the real value of your debt would have been halved. In general, in times of
inflation those with economic power tend to gain at the expense of the weak, particularly those on fixed
incomes.
Why is inflation a problem? - Balance of payments effects
If a country has a higher rate of inflation than its major trading partners, its exports will become relatively expensive and imports relatively cheap. As a result, the balance of trade will suffer, affecting employment in exporting industries and in industries producing import-substitutes. Eventually, the exchange rate will be affected.
Why is inflation a problem? - Uncertainty of the value of money and prices
If the rate of inflation is imperfectly anticipated, no one has certain knowledge of the true rate of
inflation. As a result, no one has certain knowledge of the value of money or of the real meaning of
prices. If the rate of inflation becomes excessive, and there is ‘hyperinflation’, this problem becomes so
exaggerated that money becomes worthless, so that people are unwilling to use it and are forced to resort to barter. In less extreme circumstances, the results are less dramatic, but the same problem exists. As prices convey less information, the process of resource allocation is less efficient and rational decision-making is almost impossible.
Why is inflation a problem? - Resource costs of changing prices
A fourth reason to aim for stable prices is the resource cost of frequently changing prices. In times of
high inflation, substantial labour time is spent on planning and implementing price changes. Customers
may also have to spend more time making price comparisons if they seek to buy from the lowest cost
source.
Why is inflation a problem? - Economic growth and investment
It is sometimes claimed that inflation is harmful to a country’s economic growth and level of investment..
Although some studies have indicated that the adverse influence of inflation on economic growth and
investment appears to be small in the short term, it could affect a country’s standard of living fairly
significantly over the long term.
Consumer price indices
We have already referred to the way in which inflation erodes the real value of money. In order to
measure changes in the real value of money as a single figure, we need to group all goods and services
into a single price index. A consumer price index is based on a chosen ‘basket’ of items which consumers purchase. A weighting is decided for each item according to the average spending on the item by consumers.
Consumer price indices may be used for several purposes, for example as an indicator of inflationary
pressures in the economy, as a benchmark for wage negotiations and to determine annual increases in
government benefits payments. Countries commonly have more than one consumer price index because
one composite index may be considered too wide a grouping for different purposes.
Consumer price indices - The RPI and the CPI
One important measure of the general rate of inflation in the UK used over many years has been the
Retail Prices Index (RPI). The RPI measures the percentage changes month by month in the average
level of prices of the commodities and services, including housing costs, purchased by the great majority of households in the UK. The items of expenditure within the RPI are intended to be a representative list of items, current prices for which
are collected at regular intervals.
Since 2003, the Harmonised Index of Consumer Prices (HICP) has been used as the basis for the UK’s
inflation target. The UK HICP is called the Consumer Prices Index (CPI). The CPI excludes most housing costs.
Consumer price indices - The underlying rate of inflation
The term underlying rate of inflation is usually used to refer to the RPI adjusted to exclude mortgage costs and sometimes other elements as well (such as the local council tax). The effects of interest rate changes on mortgage costs help to make the RPI fluctuate more widely than the underlying rate of inflation.
RPIX is the underlying rate of inflation measured as the increase in the RPI excluding mortgage interest
payments. Another measure, called RPIY, goes further and excludes the effects of sales tax (VAT) changes as well.
Causes of inflation
The following can cause inflation:
Demand pull factors
Expectations
Cost push factors
Excessive growth in the money supply
Causes of inflation - Demand pull inflation
Demand pull inflation arises from an excess of aggregate demand over the productive capacity of the
economy.
Demand pull inflation occurs when the economy is buoyant and there is a high aggregate demand, in
excess of the economy’s ability to supply.
(a) Because aggregate demand exceeds supply, prices rise.
(b) Since supply needs to be raised to meet the higher demand, there will be an increase in demand
for factors of production, and so factor rewards (wages, interest rates, and so on) will also rise.
(c) Since aggregate demand exceeds the output capability of the economy, it should follow that
demand pull inflation can only exist when unemployment is low. A feature of inflation in the UK
in the 1970s and early 1980s, however, was high inflation coupled with high unemployment.
Demand pull inflation: inflation resulting from a persistent excess of aggregate demand over aggregate supply. Supply reaches a limit on capacity at the full employment level.
Causes of inflation - Cost push inflation
Cost push inflation arises from increases in the costs of production.
Cost push inflation occurs where the costs of factors of production rise regardless of whether or not they
are in short supply. This appears to be particularly the case with wages.
Cost push inflation: inflation resulting from an increase in the costs of production of goods and services, eg through escalating prices of imported raw materials or from wage increases.
Causes of inflation - Import cost factors
Import cost push inflation occurs when the cost of essential imports rise regardless of whether or not
they are in short supply. This has occurred in the past with the oil price rises of the 1970s. Additionally, a fall in the value of a country’s currency will have import cost push effects since a weakening currency increases the price of imports.
Causes of inflation - Expectations and inflation
A further problem is that once the rate of inflation has begun to increase, a serious danger of expectational inflation will occur. This means, regardless of whether the factors that have caused inflation are still persistent or not, there will arise a generally held view of what inflation is likely to be, and so to protect future income, wages and prices will be raised now by the expected amount of future inflation. This can lead to the vicious circle known as the wage-price spiral, in which inflation becomes a relatively permanent feature because of people’s expectations that it will occur.
Causes of inflation - Money supply growth
Monetarists have argued that inflation is caused by increases in the supply of money. There is a considerable debate as to whether increases in the money supply are a cause of inflation or whether
increases in the money supply are a symptom of inflation. Monetarists have argued that since inflation is
caused by an increase in the money supply, inflation can be brought under control by reducing the rate
of growth of the money supply
- Unemployment
- Unemployment
The rate of unemployment 1
The rate of unemployment in an economy can be calculated as:
Number of unemployed / Total workforce
× 100%
The number of unemployed at any time is measured by government statistics.
If the flow of workers through unemployment is constant then the size of the unemployed labour force
will also be constant.
The rate of unemployment 2
Flows into unemployment are: (a) Members of the working labour force becoming unemployed Redundancies Voluntarily quitting a job Lay-offs
(b) People out of the labour force joining the unemployed
School leavers without a job
Others (for example, carers) rejoining the workforce but having no job yet
The rate of unemployment 3
Flows out of unemployment are:
Unemployed people finding jobs
Laid-off workers being re-employed
Unemployed people stopping the search for work
In the UK, the monthly unemployment statistics published by the Office for National Statistics (ONS)
count only the jobless who receive benefits.
The ONS also produce figures based on a quarterly survey of the labour force known as the International
Labour organisation measure (ILO measure) that provides seasonally adjusted monthly data. This figure
is considered to be more useful because it is also an internationally comparable measure.
Consequences of unemployment
Unemployment results in the following problems.
(a) Loss of output. If labour is unemployed, the economy is not producing as much output as it
could. Thus, total national income is less than it
could be.
(b) Loss of human capital. If there is unemployment,
the unemployed labour will gradually lose its skills, because skills can only be maintained by working.
(c) Increasing inequalities in the distribution of income. Unemployed people earn less than employed people, and so when unemployment is increasing, the poor get poorer.
(d) Social costs. Unemployment brings social problems of personal suffering and distress, and possibly also increases in crime, such as theft and vandalism.
(e) Increased burden of welfare payments. This can have a major impact on government fiscal
policy.
Causes of unemployment 1
Unemployment may be classified into several categories depending on the underlying causes.
(Category/Comment)
Real wage unemployment
- This type of unemployment is caused when the supply of labour exceeds the demand for labour, but real wages do not fall for the labour market to clear. This type of unemployment is normally caused by strong trade unions which resist a fall in their wages.
Another cause of this type of unemployment is the minimum wage rate, when it is set above the market clearing level.
Frictional
- It is inevitable that some unemployment is caused not so much because there are not enough jobs to go round, but because of the friction in the labour market (difficulty in matching quickly workers with jobs), caused perhaps by a lack of knowledge about job opportunities. In general, it takes time to match prospective employees with employers, and individuals will be unemployed during the search period for a new job. Frictional unemployment is temporary, lasting for the period of transition from one job to the next.