With droughts and poor harvests in both North America and in Russia and the Ukraine, there are worries that food prices are likely to see sharp rises in the coming months. This is clearly bad news for consumers, especially the poor for whom food accounts for a large proportion of expenditure.
But it’s also bad news more generally, as higher food prices are likely to have a dampening effect on the global economy, struggling to recover from five years of low or negative growth. And it’s not just food prices. Oil prices are rising again. Since mid June, they have risen by nearly 25%. This too is likely to have a dampening effect.
Another contributing factor to rising food prices is a response, in part, to rising oil prices. This is the diversion of land from growing food to growing crops for biofuels.
G20 countries held a conference call on 28 August to discuss food prices. Although representatives decided against an emergency meeting, they agreed to reassess the situation in a few weeks when the size of the US harvest would be clearer. If the situation proved as bad as feared, then the G20 would call an emergency meeting of the Rapid Response Forum, to consider what could be done.
But is the sole cause of rising food prices a lack of production? Are there other problems on the supply side, such as poor distribution systems and waste? And what about the role of demand? How is this contributing to long-term increases in food prices? The articles consider these various factors and what can be done to dampen food prices.
Articles
G20 points to ‘worrying’ food prices Financial Times, Javier Blas (28/8/12)
US food prices to surge on drought Gulf News(30/8/12)
Best to get used to high food and energy prices – they’re here to stay The Telegraph, Jeremy Warner (29/8/12)
Feeling a drought The Economist (14/8/12)
Q&A: World food and fuel prices BBC News (14/8/12)
G20 considers global meeting as food prices rise BBC News (28/8/12)
Biofuels and Food Prices (direct link) BBC ‘In the Balance’ programme (25/8/12)
U.N. body urges G20 action on food prices, waste Reuters, Patrick Lannin (27/8/12)
Ethanol industry hits back over food price claims EurActiv (28/8/12)
The era of cheap food may be over Guardian, Larry Elliott (2/9/12)
Data
Food Price Index Index Mundi
Questions
- Why have food prices been rising in recent weeks?
- Use a demand and supply diagram to demonstrate what has been happening to food prices.
- What determines the price elasticity of demand for wheat? What might this elasticity vary over time?
- What is the role of speculation in determining food prices?
- Illustrate on an aggregate demand and supply diagram the effect of a commodity price shock. What is likely to be the policy response from central banks?
- What determines the price elasticity of supply of food in (a) the short term and (b) the long term?
- What determines the cross price elasticity of supply of food to the price of oil? Is the cross price elasticity of supply positive or negative?
- What can governments do to reduce food prices, or at least reduce food price inflation?
- What benefits may come from higher food and fuel prices over the longer term?
Last year, an academic discovered that the only two firms on Amazon selling new copies of a classic biology textbook were charging well over $1 million (plus $3.99 for shipping!). Furthermore, when he checked the next day, prices had risen even further to nearly $2.8 million! Intrigued by this strange pricing behaviour, he started to investigate the prices further.
In oligopoly markets with a small number of players, firms must make strategic decisions taking into account how they expect their rivals will react. One option in today’s online market places is for firms to use computer algorithms which automatically adjust their prices according to the prices their rivals are charging. The results of his investigation suggested that this was exactly what was causing the prices for this textbook to be so high.
One of the firms appeared to adopt a pricing rule which set its price at 0.9983 times the price of the other firm. This seems to make sense – this firm wants to undercut its rival in order to be more likely to sell its copy. However, if both firms operated under this strategy, we would expect to see prices falling over time (see also). In contrast, the strategy of the other firm appeared to be to price 1.270589 above its rival’s price. Why would it want to try to make sure it was always more expensive that its rival? The academic’s plausible explanation was that:
“…they do not actually possess the book. Rather, they noticed that someone else listed a copy for sale, and so they put it up as well – relying on their better feedback record to attract buyers. But, of course, if someone actually orders the book, they have to get it – so they have to set their price significantly higher – say 1.27059 times higher – than the price they’d have to pay to get the book elsewhere.”
Put both of these pricing rules together and prices will continuously rise over time! This was exactly what the academic observed for over a week, until human intervention appears to have returned prices to a more sensible level.
As Tim Harford discusses in his recent blog post, it had been hoped that online market places would result in very low prices because the high degree of price transparency increases competition. Clearly the prices Amazon was initially charging for the textbook didn’t support this theory and even after human intervention prices would seem to be well above marginal production costs. However, as the blog post goes on to explain, we should not necessarily expect price transparency always to lead to low prices. Economic theory shows us that in oligopoly markets, when a small number of players interact repeatedly, they may be able to collude tacitly on high prices. Furthermore, a high degree of price transparency may help such collusive behaviour because it makes it easier for firms to detect cheating by a rival.
Amazon’s $23,698,655.93 Book About Flies (SCREENSHOT) The Huffington Post, Steven Hoffer (26/04/11)
Questions
- What are the key features of competition between book sellers on Amazon?
- What price setting rule would the two firms have to use for prices to continuously fall over time? Provide an illustrative example.
- What are the pros and cons for a firm of relying on a computer algorithm to set its prices?
- How might a firm program its price setting algorithm if it wanted to collude tacitly with its rivals?
- Can you think of any other explanations for the pricing strategies that the two Amazon sellers adopted?
Rail companies will be permitted to raise average regulated rail fares next year by 6.2%. Not surprisingly, this has been met with dismay and anger by rail travellers, especially long-distance commuters, who could see their annual season tickets going up by several hundred pounds.
Some fares, such as advance tickets, are unregulated. Others, such as anytime, off-peak and season tickets, are regulated by the government. The formula for working out permitted price rises for regulated fares is RPI plus 3%, where RPI is the July annual inflation rate based on the retail price index.
The RPI figure was announced by the ONS on 14 August and was a surprisingly high 3.2% – up from 2.8% in June: see Table 21 in the ONS’s CPI And RPI Reference Tables, July 2012. (Click here for a PowerPoint of the chart on the left.) Hence average fares can rise by 3.2% + 3% = 6.2%.
Rail travellers are angry on three counts:
First, the RPI measure of inflation is generally around 0.5% higher than the CPI measure (which is used for working out public-sector pay increases and the uprating of pensions and benefits). The July figure for CPI inflation was 2.6%.
Second, the extra 3% added on top of RPI means that that rail fares are going up more rapidly than other prices, and incomes too. The reason given for this is to shift the burden of funding the railways from the taxpayer to the traveller.
Third, the formula applies to average fares. Rail companies can raise particular regulated fares by up to 5 percentage points more than the formula provided they raise other fares by less than the formula. Thus some fares are set to rise by 11.2% – including some of the most expensive season tickets.
The government justified the increases by arguing that the higher fares will allow more investment by the rail companies, which could result in lower costs in the future. Nevertheless, two thirds of the revenue from the above-inflation increases will go to the government and only one third to the rail companies.
Webcasts
Inflation shock as rail fares set to soar Channel 4 News, Ciaran Jenkins (14/8/12)
Protests as rail fare price rises announced The Telegraph (14/8/12)
How do our rail fares compare with the rest of Europe? BBC News (14/8/12)
Rail fare increase will make life better, says minister BBC News (14/8/12)
Passenger Focus: Train companies ‘using dark arts’ BBC News, David Sidebottom (14/8/12)
Articles
Rail fares set to increase by 6.2% Financial Times, Mark Odell (14/8/12)
Rail fares set to rise by 6.2% in January Guardian, Gwyn Topham (14/8/12)
Rail fare hike of 6.2% sparks angry reaction BBC News (14/8/12)
Soaring rail fares will do nothing for the recovery The Telegraph (14/8/12)
Commuters plead with Osborne to prevent 10 per cent rise in rail fares Independent, Oliver Wright (15/8/12)
Rail fare rises: how to keep your ticket prices as low as possible Guardian, Mark King (14/8/12)
Documents and information
Fares Review Conclusions 2003 Strategic Rail Authority (June 2003)
Fares Office of Rail Regulation
Fares on National Rail Association of Train Operating Companies
Questions
- What are the arguments for and against the general principle of using an RPI+X formula for regulating rail fares?
- What are the arguments for and against allowing train operating companies to raise regulated rail fares by an average of RPI plus 3%, with 2 of the 3 percent above RPI inflation going to the government?
- In what ways are travellers likely to respond to the higher prices?
- Why are some travellers likely to have a much lower price elasticity of demand for rail travel than others? What determines this price elasticity of demand?
- What externalities exist in rail transport? How should this impact on the government’s rail pricing strategy?
- How is infrastructure development funded for (a) rail, (b) roads and (c) airports? Does this lead to an efficient allocation of transport investment?
- How does rail pricing in the UK compare with that in other European countries? Should other European countries follow the UK’s policy of above inflation fare increases to fund rail investment?
A campaign to introduce a tax on disposable plastic bags in England has been launched by various pressure groups, including The Campaign to Protect Rural England (CPRE), Keep Britain Tidy, the Marine Conservation Society and Surfers Against Sewage. Plastic bags, they maintain, litter streets and the countryside and pollute the seas, where they cause considerable damage to marine life.
They propose a tax of 5p per bag, which would be passed on to consumers. Such a levy has already been introduced in Wales in October 2011. As a result, plastic bag use in Wales has dropped dramatically (see also the full report from the Welsh Government). The Scottish Government and the Northern Ireland Assembly are also planning introducing similar charges.
Many other governments have introduced taxes, charges or bans on plastic bags and many more are considering introducing such measures. Ireland introduced a 15 euro cent charge on single-use plastic bags as far back as 2002 and saw a 94% reduction in plastic bag use (328 per person per year to 21). The charge was raised to 22 euro cents in 2007 after bag use rose to 30 per person.
Other countries have banned plastic bags altogether: some, such as Rwanda and Somalia have banned all plastic bags; others, such as China and South Africa have banned very thin bags; others, such as Italy, have banned non-biodegradable ones.
In the USA, various states or districts have introduced levies and in the EU, where more than four billion bags are thrown away each year, the European Commission will soon publish proposals for limiting the use of plastic bags.
So what are the arguments for limiting the use of plastic bags? Why is it not enough to leave things simply to the market? And if the use of plastic bags is to be reduced, what’s the most efficient way of doing so? Are there any problems with alternatives to plastic bags? The following articles and reports consider these questions?
Articles
England urged to pick up Wales’ plastic bag levy businessGreen, Jessica Shankleman (1/8/12)
Wales’ plastic bag charge yields massive green savings businessGreen, Jessica Shankleman (5/7/12)
Supermarkets ‘should charge £1 a bag’ BBC Today Programme, Samantha Harding and Judith Holder (2/8/12)
Environmentalists team up to push for bag tax in England Plastics News, Anthony Clark (1/8/12)
Break the Bag Habit Keep Britain Tidy (1/8/12)
Plastic bag use ‘up for second year running’ Guardian, Rebecca Smithers (5/7/12)
Plastic bag use in Wales plummets due to 5p charge, figures show Guardian, Adam Vaughan (4/7/12)
Carrier bag charge ‘effective and popular’ figures reveal ITV News (4/7/12)
What should be done about plastic bags? BBC News Magazine, Chris Summers (19/3/12)
Irish bag tax hailed success BBC News, Chris Summers (20/8/02)
The Big Fix The Math Behind Sacking Disposable Bags Atlantic Cities, Nate Berg (26/9/11)
Fremantle moves to ban plastic bags ABC News, Lucy Martin (23/7/12)
Bans Plastic Bag Ban Report, Ted Duboise (updated)
Vote With Your Dollars, and Also Vote New York Times, Gernot Wagner (30/7/12)
Reports
Evaluation Of The Introduction Of The Single-Use Carrier Bag Charge In Wales: Attitude Change And Behavioural Spillover, Wouter Poortinga, Lorraine Whitmarsh and Christine Suffolk Report to Welsh Government by Cardiff University (June 2012)
Life cycle assessment of supermarket carrierbags: a review of the bags available in 2006 Environment Agency, Joanna Marchant (25/7/11)
Stakeholder consultation on options to reduce the use of plastic carrier bags … EC Environment (19/3/12)
Questions
- Draw a diagram demonstrating the externalities involved in the use of plastic bags. Show the marginal private and social costs and benefits and the socially efficient level of consumption.
- How would you set about establishing the amount of consumer surplus from the use of plastic bags at a zero price?
- Compare the relative social efficiency of a tax on plastic bags with a ban on plastic bags.
- Would education be an effective alternative to taxing plastic bags?
- Why might it be difficult to get supermarkets and other retailers to agree to a voluntary ban on giving out free plastic bags?
- Why might it be extremely difficult in practice to establish the socially efficient price for plastic bags?
New data released on 25/7/12 by the Office for National Statistics showed that the UK economy shrank by a further 0.7% in the second quarter of 2012. This makes it the third quarter in a row in which GDP has fallen – and it is the steepest fall of the three. Faced with this, should the government simply maintain the status quo, or does it need to take new action?
The construction sector declined the most steeply, with construction output 5.2% down on the previous quarter, which in turn was 4.9% down on the quarter previous to that. The output of the production industries as a whole fell by 1.3% and the service sector fell by 0.1%. (For a PowerPoint of the following chart, click here.)
The immediate cause of the decline in GDP has been a decline in real aggregate demand, but the reasons for this are several. Consumer demand has fallen because of the squeeze on real wages, partly the result of low nominal pre-tax wage increases and partly the result of inflation and tax rises; the government’s austerity programme is holding back a growth in government expenditure; export growth has been constrained by a slowing down in the global economy and especially in the eurozone, the UK’s major trading partner; and investment is being held back by the pessimism of investors about recovery in the economy and difficulties in raising finance.
So what can be done about it?
Monetary policy is already being used to stimulate demand, but to little effect (see Pushing on a string. Despite record low interest rates and a large increase in narrow money through quantitative easing, broad money is falling as bank lending remains low. This is caused partly by a reluctance of banks to lend as they seek to increase their capital and liquidity ratios, and partly by a reluctance of people to borrow as individuals seek to reduce their debts and as firms are pessimistic about investing. But perhaps even more quantitative easing might go some way to stimulating lending.
Fiscal policy might seem the obvious alternative. The problem here is that the government is committed to reducing the public-sector deficit and is worried that if it eases up on this commitment, this would play badly with credit rating agencies. Indeed, on 27/7/12, Standard & Poor’s, one of the three global credit rating agencies, confirmed the UK’s triple A rating, but stated that “We could lower the ratings in particular if the pace and extent of fiscal consolidation slows beyond what we currently expect.” Nevertheless, critics of the government maintain that this is a risk worth taking.
The following articles look at the causes of the current double-dip recession, the deepest and most prolonged for over 100 years. They also look at what options are open to the government to get the economy growing again.
Articles
Britain shrinks again The Economist (25/7/12)
Shock 0.7% fall in UK GDP deepens double-dip recession Guardian, Larry Elliott (25/7/12)
UK GDP figures: expert panel verdict Guardian, Frances O’Grady, Will Hutton, Sheila Lawlor, Vicky Pryce and John Cridland (25/7/12)
GDP shock fall: UK growth in 2012 ‘inconceivable’, warn economists The Telegraph, Angela Monaghan (25/7/12)
UK recession deepens after 0.7% fall in GDP BBC News (25/7/12)
UK economy: Why is it shrinking? BBC News (25/7/12)
UK GDP: A nasty surprise and a puzzle BBC News, Stephanie Flanders (25/7/12)
Tough choices for Mr Osborne BBC News, Stephanie Flanders (26/7/12)
David Cameron in pledge to control UK’s debt Independent, Andrew Woodcock and James Tapsfield (26/7/12)
David Cameron defends economic policies BBC News (26/7/12)
The GDP number is awful – and it’s the product of the Government’s amateur policies, not the euro crisis The Telegraph, Thomas Pascoe (25/7/12)
UK recession: have we heard it all before? Guardian, Duncan Weldon (25/7/12)
US economic growth slows in second quarter BBC News (27/7/12)
GDP data trigger debate on economy Financial Times, Norma Cohen and Sarah O’Connor (25/7/12)
Does weak UK growth warrant more QE? Financial Times (25/7/12)
The recession: Osborne’s mess Guardian editorial (25/7/12)
Data
Gross Domestic Product, Preliminary Estimate, Q2 2012 ONS (25/7/12)
Preliminary Estimate of GDP – Time Series Dataset 2012 Q2 ONS (25/7/12)
Questions
- What are the causes of the deepening of the current recession in the UK?
- Search for data on other G7 countries and compare the UK’s performance with that of the other six countries (see, for example, the OECD’s StatExtracts.
- Compare the approach of George Osborne with that of Neville Chamberlain in 1932, during the Great Depression.
- Does weak UK growth warrant more quantitative easing by the Bank of England?
- To what extent can fiscal policy be used to stimulate the economy without deepening the public-sector deficit in the short term?
- What is meant by ‘crowding out’? If fiscal policy were used to stimulate demand, to what extent would this cause crowding out?
With droughts and poor harvests in both North America and in Russia and the Ukraine, there are worries that food prices are likely to see sharp rises in the coming months. This is clearly bad news for consumers, especially the poor for whom food accounts for a large proportion of expenditure.
