Category Archives: Growth

The Multiplier explained

An initial change in AE can have a greater final impact on equilibrium national income. This is known as the multiplier effect and it comes about because injections of demand into the circular flow of income stimulate further rounds of spending.

Multiplier Process

Consider a $300 million increase in business capital investment. This will set off a chain reaction of increases in expenditures. Firms who produce the capital goods that are ultimately purchased will experience an increase in their incomes. If they in turn, collectively spend about 3/5 of that additional income, then $180m will be added to the incomes of others. At this point, total income has grown by ($300m + (0.6 x $300m). The sum will continue to increase as the producers of the additional goods and services realize an increase in their

incomes, of which they in turn spend 60% on even more goods and services. The increase in total income will then be ($300m + (0.6 x $300m) + (0.6 x $180m). The process can continue indefinitely. But each time, the additional rise in spending and income is a fraction of the previous addition to the circular flow.

The value of the multiplier can be found by the equation ­1 ÷ (1-MPC)

You can also use the following formula which represents a four sector economy

1 ÷ MPS+MRT+MPM

MPS = Marginal propensity to save

MRT = Marginal rate of tax

MPM = Marginal propensity to import

MPC = Marginal Propensity to Consume (of additional income how much of it spent)

e.g. $1m initial spending; MPC=.8

=> income generated = 1/(1-.8) = 1/.2 = 5

=   $5m

=> $4m extra spending ($1m initial, $4m extra spending, $5m total)

Use different equations depending on the information given.

e.g.: a) if the MPC is 0.5 – 50% of the income will be spent, 50% will be saved.

then MPS is 0.5 then the multiplier is 2 = 1/0.5 = 2

b) if the MPC is 0.8 – 80% of the income will be spent then MPS is 0.2 then the multiplier is 1/0.2 = 5

c) if the MPC is 0.9 – 90% of the income will be spent then MPS is 0.1 then the multiplier is 1/0.1 = 10

What is the effect of MPT – the marginal propensity to tax or t.

  • greater MPT would lead to less income being spent in the economy

Below is a very informative mind map that I copied from an old textbook.

Multiplier.png

IMF World Evaluation from the FT

Below is a very good video put together by the FT which summarises the recent IMF Report on the World Economy. Includes:

  • Better growth in China and the Euro zone makes up for slow US growth.
  • US infrastructure spending and tax reform still has to be approved by the senate.
  • Europe looking stronger than expected.
  • Emerging economies still face tough conditions.

Output Gap in Eastern European Countries

Output GapThe Economist had a very good graphic showing the difference between the actual and potential GDP in central and eastern European countries. In Romania a 16% rise in the minimum wage is likely to lift domestic demand and inflation whilst the Ukraine and Bosnia have problems with big negative output gaps where their GDP is well below their potential GDP.

Remember to mention the output gap when doing an essay that involves the business cycle. The output gap is the difference between demand and the economy’s capacity to supply. This is the difference between the ‘actual’ level of output (GDP) and the economy’s ‘potential’ level of output (potential GDP).

  • If the economy is running above capacity (GDP > potential GDP) the output gap is positive.
  • If the economy is running below its full capacity (GDP < potential GDP) the output gap will be negative.
  • There is a sweet spot which is where the level of output is consistent with stable inflation and full employment.

Remember that ‘potential’ output is not an upper limit on the level of output. Rather, think of potential GDP as the economy’s efficient level of output. Running the economy below potential GDP is inefficient because there are some resources that are not employed. Running the economy above potential GDP is also inefficient because resources are over-utilised (eg, machinery is being made to work too hard causing it to wear out too quickly).

While it is efficient to have the economy running at potential, quite often it does not. Resources can be over- or under-utilised, which will translate into inflationary or disinflationary pressure (over-utilisation will push future inflation up, while under-utilisation pushes future inflation down).

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Africa's Resource Curse

Below is a link to an excellent podcast from the BBC World Service. I have blogged on the resource curse before and the falls in commodity prices – oil and mining – over the last year have affected the sub-Saharan African countries that are dependent on their primary industries. There is also mention of GDP being a stupid model. Worth a listen – click on link below.

Africa: The Commodity Curse Returns

In the balance - Resource Curse

For most economies that have natural endowments like oil (Nigeria) or minerals, there is the risk of the economy experiencing the ‘resource curse’. This is when a natural resource begins to run out, or if there is a downturn in price, manufacturing industries that used to be competitive find it extremely difficult to return to an environment of profitability. According to Paul Collier, Nigeria has a resource curse of its own, the civil war trap in which 73% of the low income population have been affected by it, as well as a natural resource trap- where the so-called advantages of a commodity in monetary value did not eventuate – on average affecting only 30% of the low income population. It seems that in Nigeria there is a strong relationship between resource wealth and poor economic performance, poor governance and the prospect of civil conflicts. The comparative advantage of oil wealth in fact turns out to be a curse. governments and insurgent groups that determines the risk of conflict, not the ethnic or religious diversity. Others see oil as a “resource curse” due to the fact that it reduces the desire for democracy.

Click here for more on the Resource Curse from this blog

A2 Economics – The Laffer Curve

New to the A2 syllabus last year was the Laffer Curve. PBS Economics correspondent Paul Solman explores the question of just how high U.S. tax rates should or shouldn’t be and examines the relationship between economic activity and tax rates. There is a good explanation of the Laffer Curve which is the relationship between economic activity and tax rates.

In between, a smooth curve representing Laffer’s pretty simple idea: Somewhere above zero percent and below 100 percent, there is a tax rate where government will collect the most revenue in any given year. Now, the Laffer Curve applies to everyone, but the top so-called marginal rate is only relevant to the rich. It’s now 35 percent on all taxable income in excess of about $380,000 a year. Does that 35 percent rate maximize total tax revenue for the government?

Trump’s tax cuts likely to have limited impact on growth

Donald Trump has indicated that the US economy needs a big tax cut to stimulate some growth and aggregate demand –  C+I+G+(X-M). His rationale is that with consumers having greater income they will spend consume more (C) and businesses keeping more of their profits will invest more (I). He is even so confident that the tax cuts won’t put a dent in the overall tax revenue of the government. However economists are suggesting that the US economy is already growing as fast as it can and in order to improve its growth rate it needs to investment in productivity.

D Pull Inflation.jpegNevertheless, US tax cuts in the 1980’s under Ronald Reagan proved to be very effective in stimulating aggregate demand but the economic environment then was different to that of today. The 1980’s was an era of stagflation with the US experiencing 10% unemployment and inflation reaching 15%. Since the GFC in 2007 growth has been positive and unlike the 1980’s unemployment has been falling  – from 10% in Oct 2009 to 4.4% in April 20178. Tax cuts are all very well when you have high unemployment but with the rate falling to under 5% companies may find it difficult to respond to the greater demand for goods and services by taking on workers to increase supply. Tax cuts would then lead to an increase in inflationary pressure (see graph) which is turn would prompt the US Fed to increase interest rates.

ProductivityTrump’s plan would also increase the Federal deficit and borrowing from the government. This would put upward pressure on interest rates for the private sector which reduces the potential for further growth. As noted earlier the area that needs to be addressed is productivity, with a shift of the LRAS curve to the right – see graph.

The Doughnut Model of Economics

A recent book entitled “Doughnut Economics: Seven Ways to Think Like a 21st-Century Economist” by Kate Raworth of Oxford University’s Environmental Change Institute, offers an alternative to the all too familiar policy of economic growth to solve the issues of poverty, inequality, unemployment in the global economy. Simon Kuznets, who normalised the measurement of economic growth, stated that national income cannot be a accurate measure of total welfare in an economy as it only measures annual flows of money and not stocks of wealth and their distribution. Raworth states that the current model of endless economic growth using up the finite resources of the planet is not the way forward. Most textbooks refer to the circular flow as the model of the economic system – households, firms, banks, overseas markets and the government which bears little relationship to reality today. Instead Raworth goes beyond this simple circular flow model and includes social and environmental issues – energy, the environment, raw materials, water pollution etc.

The Doughnut
Raworth’s circular flow consists of two rings – see graphic below.

Doughnut Economics.jpeg

Inner Ring – this consists of the social foundation and those things we need for a good life – food, water, health, education, peace and justice etc. People living within this ring in the hole in the middle are in a state of deprivation.

Outer Ring – this consists of the earth environmental limits – climate change, ozone depletion, water pollution, loss of species etc.

The area between the two rings is the “ecologically safe and socially just space” in which humanity should strive to live. As stated in The Guardian review, the purpose of economics should be to help us enter that space and stay there. As the graphic shows we breach both rings as billions of people live below the poverty line and climate conditions, biodiversity loss, land conversion etc are at concerning levels. The video below is a useful explanation.

Will there be a recovery in global dairy prices?

Dairy prices fell dramatically in 2014 and 2015, prompting the RBNZ to reverse 2014 OCR increases in 2015. Average prices on the GlobalDairyTrade auction fell by 38% in 2014/2015 and 20% in the 2015/2016 to mid-March.

Inconsistent Chinese demand and increased European/US dairy supply causing the perfect storm of plummeting whole milk powder prices. Thankfully, for dairy farmers and the NZ economy dairy prices recovered in late 2016 but can it be maintained into 2017? Here are some reasons why prices may recover:

  1. EU production is slowing down
  2. New Zealand production is also likely to fall
  3. Demand from China is likely to increase
  4. ASB rural economist Nathan Penny noted three things that would impact the price of milk. One as the fact that milk production was held back before the removal of annual quotas at the end of March 2015 as countries avoided paying penalties associated with producing above quota. Two, after the April removal of quotas, production surged in the EU with April production rising over 3% on a month-by-month basis. Three that post-quota surge has now passed, with production growth slowing, particularly since July, as farmers have struggled with low milk prices.

Once supply is more aligned to demand, global prices are expected to rise again. Europe collectively is the world’s largest dairy exporter, accounting for nearly a third of global export sales. EU exports increased by 6% in milk equivalent last year.

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 Sources: National Business Review and PWC

Options for taking on Trump – the Japanese Model.

trump-abeA colleague alerted me to a Terrie Lloyd a New Zealand businessman in Japan who writes a weekly newsletter. With the election of Donald Trump his recent writing looked at bullies and ways in which you deal with them. Shinzo Abe, the Japanese prime minister, has been proactive in getting to know Trump and his team and how the two countries can work together.

Research on bullies

Lloyd suggests that there are generally three ways to deal with a bully.

Run – UK seem to be taking this option
Fight – Chinese will do this
Suffer and appease – Japan, having a bullying culture already, will go for appeasement

Abe will be meeting with Trump on 10th February for a second time in as many months and will want to convince him that Japan is one of the good guys and if he has to pick on someone in the area he should pick on China. For this to work Abe also needs to feed Trump’s ego publicly

Lloyd looks at the work of Dacher Keltner who has written about appeasement and related
human emotion and social practice. He looks at two general classes of appeasement.

1) reactive – the person provides appropriate responses after incidents and these responses are usually public displays of embarrassment and shame.
2) anticipatory appeasement where a person is proactive and engages in certain strategies to avoid conflict. Polite modesty and shyness are also considered anticipatory appeasement.

Japanese Model for dealing with bullies

With Japan taking the latter option, Keltner is suggesting that Abe must appease Trump with gifts of value and that they are seen publicly to assist Trumps power and reputation. Last month the Japanese gave access to US car manufacturers but will that be enough to keep Trump happy? At the meeting on 10th February Abe will propose a package that could generate 700,000 U.S. jobs and help create a $450-billion market. It includes the building of infrastructure projects such as high-speed trains in the northeastern United States, and the states of Texas and California, and renovating subway and train cars. It also includes cooperation in global infrastructure investment, joint development of robots and artificial intelligence, and cooperation in cybersecurity and space exploration, among others.

Toyota the car manufacturer has also been taking the appeasement option after the Trump administration criticised their building of a second car assembly plant in Mexico and also threatened to impose a 20% tariff on Japanese automobile and auto parts makers with plants in Mexico. Toyota quickly announced it would invest $10 billion in its U.S. operations over the next five years.

Abe has definitely been massaging the ego of Trump not only being the first international leader to visit Washington after his election but also telling Trump that he “hopes the United States will become a greater country through (your) leadership,” adding Japan wants to “fulfill our role as your ally.” It will be interesting to see what happens after their meeting on Friday 10th February.

Sources: Terrie Lloyd,  The Japan Times