The Macroeconomic Environment Flashcards
(100 cards)
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.)