In a blog post on 1 May this year, What’s really on offer?, we looked at the ‘super-complaint‘ by Which? to the Competition and Markets Authority (CMA) about supermarket special offers. The complaint referred to bogus price reductions, ‘cheaper’ multi-buys which weren’t cheaper, smaller pack sizes and confusing special offers. Under the rules of super-complaints, the CMA had 90 days from the receipt of the complaint on 21 April 2015 to publish a response. It has now done so.
Here is an extract from its press release:
In its investigation the CMA found examples of pricing and promotional practices that have the potential to confuse or mislead consumers and which could be in breach of consumer law. Where there is evidence of breaches of consumer law this could lead to enforcement action.
However, it has concluded that these problems are not occurring in large numbers across the whole sector and that generally retailers are taking compliance seriously to avoid such problems occurring. The CMA also found that more could be done to reduce the complexity in unit pricing to make it a more useful comparison tool for consumers. …Nisha Arora, CMA Senior Director, Consumer, said:
‘We have found that, whilst supermarkets want to comply with the law and shoppers enjoy a wide range of choices, with an estimated 40% of grocery spending being on items on promotion, there are still areas of poor practice that could confuse or mislead shoppers. So we are recommending further action to improve compliance and ensure that shoppers have clear, accurate information.
Although the CMA believes that misleading pricing is not as widespread as consumer groups have claimed,
in some cases the supermarkets could be fined. The CMA also says that it will work with the supermarkets to eliminate misleading information in promotions.
In addition it recommends that the Department for Business, Innovation and Skills (BIS) publishes guidelines for supermarkets on displaying unit prices in a consistent way. It also recommends that legislation should be simplified on how items should be unit-priced.
The following articles look at the implications of the CMS’ findings.
Articles
Some UK supermarket promotions are misleading, watchdog says Financial Times, Andrea Felsted (16/7/15)
Shoppers beware: Grocers ‘confusing’ consumers with special offers, unit pricing, says government investigation International Business Times, Graham Lanktree (16/7/15)
Supermarket pricing: CMA finds ‘misleading tactics BBC News, Brian Milligan (16/7/15)
How special are special offers? BBC News, Kamal Ahmed (16/7/15)
CMA publications
Response to super-complaint: link to elements of report CMA (16/7/15)
Questions
- Give some examples of the types of promotion used by supermarkets?
- In what ways might such promotions be misleading?
- How is competition from Aldi and Lidl affecting pricing and promotions in the ‘big four’ supermarkets (Tesco, Sainsbury’s, Asda and Morrisons)?
- What cost and other advantages do Aldi and Lidl have over the big four? How might the big four reduce costs?
- Are misleading promotions systemic across the industry?
- How can behavioural economics help to explain consumers’ response to promotions in supermarkets?
- What is meant by ‘heuristics’? How might supermarkets exploit consumers’ use of heuristics in their promotions?
Many Chinese people have taken to investing on the Chinese stock market, seeing it as a way of making a lot of money quickly. From October 2014 to June this year the market soared, rising by 126% from 2290 to 5166.
More and more people used their savings to buy stocks and China now has over 90 million individual investors. And it was not just savings that were invested. Increasingly people have been borrowing money to invest, seeing it as an easy way of making money. Unlike stock markets in developed countries, where the majority of shares are held by financial organisations, such as pension funds, holdings by individuals account for about 80% of stocks on the Chinese market.
But since mid-June, share prices have plummeted by 32% (see chart). People have thus seen a huge fall in the value of their savings, while many others have found their shareholdings worth less than their debts. The fall, like the rise that preceded it, has been driven by speculation, fuelled by first optimism and then pessimism.
The Chinese government is worried that the fall might dampen investment and economic growth. It has thus has been supplying liquidity to various institutions to buy shares, but this has had little effect and is dismissed by many as meddling. What is more it could expose companies which take advantage of the liquidity to greater risk.
So serious has been the rout, that over 50% of listed companies have halted trading on the mainland Chinese stock exchanges.
So just why has there been this bubble and why has it burst? What implications will it have for (a) China and (b) the rest of the world? The following articles explore the issues.

China’s stock market fall hits small investors BBC News Magazine, John Sudworth (7/7/15)
China Stocks Plunge as State Support Fails to Revive Confidence Bloomberg (8/7/15)
Chinese stocks are crashing Business Insider UK, Myles Udland, David Scutt (8/7/15)
Shanghai stocks plunge, over 1,200 Chinese companies halt trading Economic Times of India (8/7/15)
Everyone freaking out about China’s stock-market crash is missing one thing Business Insider UK, Elena Holodny (7/7/15)
China’s stock market has lost nearly a third of its value in a month Vox, Timothy B. Lee (8/7/15)
Chinese leaders may be undermined as investors suffer stock market slide The Guardian, Emma Graham-Harrison (8/7/15)
Opinion: China’s stock-market crash is just beginning MarketWatch, Howard Gold (8/7/15)
What does China’s stock market crash tell us? BBC News (22/7/15)
Questions
- What is meant by a ‘bubble’? Has the recent performance of the Shanghai Stock Market been an example of a bubble?
- Is the current fall in share prices in China an example of overshooting? Explain how you would decide.
- Distinguish between stabilising and destabilising speculation. Why does destabilising speculation not go on for ever?
- What is meant by the ‘stock market wealth effect’? How is the fall in the Chinese stock market likely to affect consumption and investment in China? How does the proportion of assets held in the form of shares affect the magnitude of the effect?
- What are the likely implications of the fall in the Chinese stock market for the rest of the world?
- Why has the Hong Kong stock market not behaved in the same way as the Shanghai market?
- What have the Chinese authorities been doing to arrest the fall in share prices? How likely are they to succeed?
Last week saw the launch of Apple’s new music streaming service. This will clearly provide serious competition for the existing music streaming providers such as Spotify and Tidal. One important difference is that whilst Spotify offers a free version to listeners funded by advertising revenue, all Apple Music users will be required to pay a monthly subscription charge. However, Apple will allow listeners a free three-month trial of its service.
Initially Apple intended not to pay artists royalties during this trial period. However, it soon reversed this plan when the pop-star Taylor Swift wrote a blog post criticising Apple for this and threatening to withhold her most recent album.
The negotiations between Apple and the record labels are also facing considerable scrutiny from the competition authorities on both sides of the Atlantic. They seem particularly concerned that Apple may have conspired with or pressured labels to withdraw their support for rival streaming services such as Spotify that offer free versions to consumers. Although not clear, it has been suggested that the European Commission’s initial probe into this may have been initiated by a complaint from a company offering such a free version of its service.
On the other hand, there has also been considerable criticism of free music services such as Spotify. One of the cofounders of the Beats music streaming service, which was subsequently acquired by Apple, has argued that the free business model does not properly value recorded music. Likewise, Taylor Swift removed her entire back catalogue from Spotify, and the leading record label, Universal, is applying pressure on Spotify to change its business model. It is currently unclear whether Apple has been directly responsible for Universal’s standpoint. What is clear is that Apple’s entry will shake-up this market and the identity and business model of the future market leader is at stake.
Streaming sets off a painful debate in the music industry Financial Times, Jonathan Ford (22/03/15)
Apple’s new music service will push paid subscriptions, with free samples re/code, Dawn Chmielewski and Peter Kafka (08/05/15)
Taylor Swift is fighting the wrong part of the music industry Financial Times, Jonathan Ford (05/07/15)
Here’s what happens to your $10 after you pay for a month of Apple music re/code, Peter Kafka (15/06/15)
Questions
- What are the key features of the music streaming service market?
- What are the pros and cons of Spotify’s business model?
- Why might the views on free streaming services differ between small and large artists and labels?
- How do you think the music streaming market might develop in the future?
It was argued in an earlier blog on the Greek debt crisis that a deus ex machina was needed to find a resolution to the impasse between Greece and its creditors. The most likely candidate for such as role was the IMF.
Three days before the Greek referendum on whether or not to accept the Troika’s proposals, the IMF has stepped onto the stage. To the undoubted surprise of the other two partners in the Troika (the European Commission and the ECB), the IMF argues that Greece’s debts are unsustainable and that much more is needed than a mere bailout (which simply rolls over the debt).
According to the IMF, Greece needs €52bn of extra funds between October 2015 and December 2018, large-scale debt relief, a 20-year grace period before making any debt repayments and then
debt repayments spread over the following 20 years. In return, Greece should commit to supply-side reforms to cut out waste, reduce bureaucracy, improve tax collection methods and generally improve the efficiency of the economic system.
It would also have to agree to the previously proposed primary budget surplus (i.e. the budget surplus excluding debt repayments) of 1 per cent of GDP this year, rising to 3.5 per cent in 2018.
So it this what commentators have been waiting for? What will be the reaction of the Greeks and the other two partners in the Troika? We shall see.
Articles
IMF says Greece needs extra €50bn in funds and debt relief The Guardian. Phillip Inman, Larry Elliott and Alberto Nardelli (2/7/15)
IMF: 3rd Greek bailout would cost €52bn. Or more? Financial Times, Peter Spiegel (2/7/15)
IMF: Greece needs to reform for sustainable debt, financing needs rising CNBC, Everett Rosenfeld (2/7/15)
The IMF has made an obvious point about Greece’s huge debt. Here’s why it still matters Quartz, Jason Karaian (3/7/15)
Greece: when is it time to forgive debt? The Conversation, Jagjit Chadha (2/7/15)
IMF Analysis
Greece: Preliminary Draft Debt Sustainability Analysis IMF (2/7/15)
Preliminary Debt Sustainability Analysis for Greece IMF (25/6/15)
Questions
- To which organisations is Greece indebted? What form to the debts take?
- To what extent is Greece’s current debt burden the result of design faults of the euro?
- What are the proposals of the IMF? What effect will they have on the Greek economy if accepted?
- How would the IMF proposals affect aggregate demand (a) directly; (b) compared with the proposals previously on the table that Greece rejected on 26 June?
- What would be the effects of Greek exit from the euro (a) for Greece; (b) for other eurozone countries?
- What bargaining chips can Greece deploy in the negotiations?
- Explain what is meant by ‘moral hazard’. Where in possible outcomes to the negotiations may there be moral hazard?
- What has been the impact of Greek austerity measures on the distribution of income and wealth in Greece?
- What are the practicalities of pursuing supply-side policies in Greece without further dampening aggregate demand?

The negotiations between Greece and the ‘troika’ of creditors (the IMF, the European Commission and the ECB) have seen many twists and turns before breaking down on 26 June. Throughout, both sides have sought to give as little as possible while seeking a compromise. Both sides have claimed that their position is reasonable, even though a gulf has remained between them.
What has been playing out is a high-stakes game, where the optimum outcome for each side is quite different.
Greece seeks bailout terms that would allow it to achieve a smaller primary budget surplus (but still a surplus in the midst of a deep recession). The surplus would be achieved largely through tax rises on the wealthy rather than further cuts that would hit the poor hard. It is also seeking a substantial amount of debt forgiveness to make servicing the remaining debt possible.

The troika is seeking a larger budget surplus than the Greeks are willing to contemplate. This, it maintains, should be achieved largely through additional cuts in government expenditure, including further reductions in pensions and in public-sector wages.
Both sides used threats and promises as the negotiations became more and more acrimonious.
The troika threatened to withhold the final €7.2bn of the bailout necessary to pay the €1.6bn due to the IMF on 30 June, unless the Greeks accepted the terms of the austerity package put to them. The Greek Prime Minister, Alexis Tsipras, in rejecting the proposals, called a referendum on the package. This threatens the stability of the eurozone as a No vote, if it led to a Greek exit from the eurozone, could undermine confidence in monetary union. After all, if Greece could be forced out, other countries facing severe difficulties might also be forced out at some point in the future. Once a country leaves the eurozone, the monetary union becomes more like a system of pegged exchange rates. And pegged exchange rates are open to destabilising speculation at times of economic divergence.
A Greek exit from the euro (dubbed ‘Grexit’) is seen as undesirable by most Greeks and by most politicians in the rest of Europe. The optimum for both sides collectively would be a compromise, which saw more modest cuts by Greece and the eurozone remaining intact. By both sides seeking to maximise their own position, the Nash equilibrium is certainly not the best outcome.
But as long as the troika believes that the Greeks are likely to vote Yes to the proposed bailout terms, it still hopes to get the outcome that is best from its point of view – an outcome that would probably involve regime change. And as long as the Greek government hopes that a No vote will force the troika to think again and come back with less austere proposals, it still hopes to get the outcome that is best from its point of view. But the outcome of this game of ‘chicken’ could well be Grexit and a Nash equilibrium that neither side wants.
But while the endgame is being played out by politicians, people in Greece are suffering. Policies of severely depressing aggregate demand to turn a large budget deficit into a primary budget surplus have led to the economy shrinking by 26%, overall unemployment of 27% and youth unemployment of over 60%. The Greeks truly believe themselves to be stuck between a rock and a hard place.
The following articles look at the nature of the ‘game’ being played and at the effects on the Greek economy, both of the proposed austerity package proposed by the troika and Grexit. They also look at the knock-on effects for the eurozone, the EU and the global economy.
Can game theory explain the Greek debt crisis? BBC News Magazine, Marcus Miller (26/6/15)
Against the Grain: What Yanis Varoufakis can learn from a real game theory master – Nicola Sturgeon City A.M., Paul Ormerod (24/6/15)
John Nash’s Game Theory and Greece Bloomberg, Mohamed A. El-Erian (29/5/15)
The Greek crisis: that 1931 moment The Economist, Buttonwood column (23/6/15)
How game theory explains Grexit and may also predict Greek poll outcome The Conversation, Partha Gangopadhyay (1/7/15)
Greece debt crisis: Tsipras may resign if Greeks vote yes BBC News (30/6/15)
Greek debt crisis: Is Grexit inevitable? BBC News. Paul Kirby (29/6/15)
Existential threat to euro from Greek exit BBC News, Robert Peston (29/6/15)
How I would vote in the Greek referendum The Guardian, Joseph Stiglitz (29/6/15)
Greece in chaos: will Syriza’s last desperate gamble pay off? The Guardian, Paul Mason (29/6/15)
What happens if Greece defaults on its International Monetary Fund loans? The Telegraph, Mehreen Khan (30/6/15)
For Greece’s international creditors, regime change is the ultimate goal The Telegraph, Jeremy Warner (29/6/15)
Europe has suffered a reputational catastrophe in Greece The Telegraph, Ambrose Evans-Pritchard (2/7/15)
Questions
- What is meant by a primary budget surplus?
- What was the troika’s proposal on the table on the 26 June that was rejected by the Greek government?
- What was the Greek government’s proposal that was rejected by the troika?
- Explain the decision trees outlined in the first BBC article below.
- In terms of game theory, what form of game is being played?
- Are the negotiations between the Greek government and the troika a prisoners’ dilemma game? Explain why or why not.
- Does the game being played between the SNP and the Conservative government in the UK offer any useful lessons to both sides in the negotiations over Greece’s possible bailout and its terms?
- Does a No vote in the referendum on 5 July imply that Greece must leave the euro? Explain.
- What would be the effects of further austerity measures on aggregate demand? What benefits to the Greek economy could be achieved from such measures?
- Why may pegged exchange rates be regarded as the worst of both worlds – a single currency in a monetary union and floating exchange rates?