Behavioural economists study how people’s buying, selling and other behaviour responds to various incentives and social situations. They don’t accept the simplistic notion that people are always rational maximisers. As the Livemint article below states, “According to behavioural economists, the human brain neither has the time nor the ability to process all the information involved in decision making, as assumed by the rational model.” Instead, rationality is bounded: people use simple rules of thumb in making decisions – rules they have developed over time in the light of experience.
So can people’s behaviour be altered by understanding their limited rationality? Advertisers are only too well aware of a number of psychological ‘tricks’ to change people’s purchasing behaviour. For example, wanting to be approved of by your friends is used by advertisers to sell various fashion products and toiletries. Often, people need only a relatively small ‘nudge’ to change the way they behave.
And it is not just advertisers who are using the insights of behavioural economics. Governments are increasingly trying to find ways of nudging people to behave in ways that are better for themselves or for society.
In 2010, David Cameron set up a ‘Nudge Unit’, formally know as ‘The Behavioural Insights Team‘. It has produced a number of academic papers on topics as diverse as tax compliance, incentives for university attendance, charitable giving in the workplace and using SMS reminders to reduce missed hospital appointments. The academic evidence can then be use as the basis for policy.
Another nudge unit has been set up in Australia (see second article below). The USA, Singapore and various other countries are increasingly using the insights of behavioural economics to devise policy to affect human behaviour.
Two recent pieces of work by the UK team concern ways of discouraging doctors from over-prescribing antibiotics and using encouraging text messages to FE students to reduce dropout rates. Another nudge has been used by the tax authorities (HMRC) who have been sending out texts to remind people to pay their taxes on time and to make them aware that they are being monitored. The message read, “Most people pay on time to avoid penalties”.
The articles below look at these recent initiatives and how human behaviour can be changed in a relatively low-cost way. In most cases this involves a simple nudge.
Articles
Nudge-unit trials reveal best ways to prod people Sydney Morning Herald, Nick Miller (29/8/15)
Government ‘nudge unit’ to attempt to change people’s behaviours Sydney Morning Herald, Nick Miller (15/9/16)
New frontiers of human behaviour Livemint, Biju Dominic (15/9/16)
Doctors ‘nudged’ into prescribing far fewer antibiotics New Scientist (15/9/16)
GPs handing out fewer antibiotics after warning of over-prescribing, says study BT (15/9/16)
Study of colleges shows ‘encouraging’ texts dramatically cut dropout rates FE Week, Paul Offord (22/7/15)
The text messages getting teenagers better grades BBC Today Programme, David Halpern and Fiona Morey (15/9/16)
Ping! Pay your tax now or face a penalty. HMRC sends out ‘threatening’ SMS texts to taxpayers The Telegraph, Christopher Hope (15/9/16)
Publications of Behavioural Insights Team
Publications list BIT
The Behavioural Insights Team’s Update Report: 2015–16: overview BIT (15/9/16)
The Behavioural Insights Team’s Update Report: 2015–16 BIT (15/9/16)
Blog BIT
Questions
- Explain what is meant by bounded rationality.
- Give some examples from your own behaviour of decisions made using rules of thumb.
- Should we abandon models based on the assumption of rational maximising behaviour (e.g. attempts to maximise consumer surplus or to maximise profit)?
- Find out some other examples of how people might be nudged to behave in ways that are in their own interest or that of society.
- How might people be nudged to eat more healthily or to give up smoking?
- To what extent can financial incentives, such as taxes, fines, grants or subsidies be regarded nudging? Explain.
- Why, do you think, the message by an Australian hospital, “if you attend, the hospital will not lose the $125 we lose when a patient does not turn up” was successful in reducing missed appointments by 20%, while the message, “if you do not attend, the hospital loses $125” was not as effective?
Economics is about choices. But how can people be persuaded to make healthy choices, or socially responsible or environmentally friendly choices? Behavioural economists have studied how people can be ‘nudged’ into changing their behaviour. One version of nudge theory is ‘fun theory’. This studies how people can be persuaded into doing desirable things by making it fun to do so.
I came across the first video below a couple of days ago. It looks at a highly successful experiment at the Odenplan underground station in Stockholm to persuade people to make the healthy choice of using the stairs rather than the escalator. It made doing so fun. The stairs were turned into a musical keyboard, complete with sound. Each stair plays a piano note corresponding to its piano key each time someone treads on it. As you go up the stairs you play an ascending scale.
After installing the musical staircase, 66% more people than normal chose the stairs over the escalator.
The fun theory initiative is sponsored by Volkswagen. The Fun Theory website is ‘dedicated to the thought that something as simple as fun is the easiest way to change people’s behaviour for the better. Be it for yourself, for the environment, or for something entirely different, the only thing that matters is that it’s change for the better.’
VW held a competition in 2009 to encourage people to invent fun products designed to change people’s behaviour. There were over 700 entries and you can see them listed on the site. The 13 finalists included the musical staircase, traffic lights with quiz questions on the red, a Connect Four beer crate, fun tram tickets (giving entry to an instant-win lottery), a pinball exercise machine, a speed camera lottery where a winner is chosen from those abiding by the speed limit, a jukebox rubbish bin (which plays when people add rubbish), a one-armed vending machine, a fun doormat, car safety belts linked to a car’s entertainment system, car safety belt with a gaming screen which turns on when buckled, a bottle bank arcade system and the world’s deepest bin (or at least one which sounds as if it is). The winner was the speed camera lottery.
The fun theory site
Thefuntheory.com
Fun theory videos
Piano Staircase – Odenplan, Stockholm (on Vimeo)
The Speed Camera Lottery (on VIMP.com, Kevin Richardson)
Garbage Jukebox (on YouTube)
The World’s Deepest Bin (on Vimeo)
Bottle Bank Arcade (on YouTube)
Questions
- Does fun theory rely on rational choices?
- Other than through having fun, how else may people be nudged into changing their behaviour?
- Go through some of the entries to the Fun Theory Award and choose three that you particularly like. Explain why.
- Invent your own fun theory product. You might do this by discussing it groups and perhaps having a group competition.
In his Budget on March 19, the Chancellor of the Exchequer, George Osborne, announced fundamental changes to the way people access their pensions. Previously, many people with pension savings were forced to buy an annuity. These pay a set amount of income per month from retirement for the remainder of a person’s life.
But, with annuity rates (along with other interest rates) being at historically low levels, many pensioners have struggled to make ends meet. Even those whose pension pots did not require them to buy an annuity were limited in the amount they could withdraw each year unless they had other guaranteed income of over £20,000.
Now pensioners will no longer be required to buy an annuity and they will have much greater flexibility in accessing their pensions. As the Treasury website states:
This means that people can choose how they access their defined contribution pension savings; for example they could take all their pension savings as a lump sum, draw them down over time, or buy an annuity.
While many have greeted the news as a liberation of the pensions market, there is also the worry that this has created a moral hazard. 
When people retire, will they be tempted to blow their savings on foreign travel, a new car or other luxuries? And then, when their pension pot has dwindled and their health is failing, will they then be forced to rely on the state to fund their care?
But even if pensioners resist the urge to go on an immediate spending spree, there are still large risks in giving people the freedom to spend their pension savings as they choose. As the Scotsman article below states:
The risks are all too obvious. Behaviour will change. People who no longer have to buy an annuity will not do so but will then be left with a pile of cash. What to do with it? Spend it? Invest it? There are many new risky choices. But the biggest of all can be summed up in one fact: when we retire our life expectancy continues to grow. For every day we live after 65 it increases by six and a half hours. That’s right – an extra two-and-a-half years every decade.
The glory of an annuity is it pays you an income for every year you live – no matter how long. The problem with cash is that it runs out. Already the respected Institute for Fiscal Studies (IFS) has said that the reform ‘depends on highly uncertain behavioural assumptions about when people take the money’. And that ‘there is a market failure here. There will be losers from this policy’.
We do not have perfect knowledge about how long we will live or even how long we can be expected to live given our circumstances. Many people are likely to suffer from a form of myopia that makes them blind to the future: “We’re likely to be dead before the money has run out”; or “Let’s enjoy ourselves now while we still can”; or “We’ll worry about the future when it comes”.
The point is that there are various market failings in the market for pensions and savings. Will the decisions of the Chancellor have made them better or worse?
Articles
Pension shakeup in budget leaves £14bn annuities industry reeling The Guardian, Patrick Collinson (20/3/14)
Chancellor vows to scrap compulsory annuities in pensions overhaul The Guardian, Patrick Collinson and Harriet Meyer (19/3/14)
Labour backs principle of George Osborne’s pension shakeup The Guardian, Rowena Mason (23/3/14)
Osborne’s pensions overhaul may mean there is little left for future rainy days The Guardian, Phillip Inman (24/3/14)
Let’s celebrate the Chancellor’s bravery on pensions – now perhaps the Government can tackle other mighty vested interests Independent on Sunday, Mary Dejevsky (23/3/14)
A vote-buying Budget The Scotsman, John McTernan (21/3/14)
L&G warns on mis-selling risks of pension changes The Telegraph, Alistair Osborne (26/3/14)
Budget 2014: Pension firms stabilise after £5 billion sell off Interactive Investor, Ceri Jones (20/3/14)
Budget publications
Budget 2014: pensions and saving policies Institute for Fiscal Studies, Carl Emmerson (20/3/14)
Budget 2014: documents HM Treasury (March 2014)
Freedom and choice in pensions HM Treasury (March 2014)
Questions
- What market failures are there in the market for pensions?
- To what extent will the new measures help to tackle the existing market failures in the pension industry?
- Explain the concept of moral hazard. To what extent will the new pension arrangements create a moral hazard?
- Who will be the losers from the new arrangements?
- Assume that you have a choice of how much to pay into a pension scheme. What is likely to determine how much you will choose to pay?
Britain has faced some its worst ever weather, with thousands of homes flooded once again, though the total number of flooded households has fallen compared to previous floods. However, for many households, it is just more of the same – if you’ve been flooded once, you’re likely to be flooded again and hence insurance against flooding is essential. But, if you’re an insurance company, do you really want to provide cover to a house that you can almost guarantee will flood?
The government has pledged thousands to help households and businesses recover from the damage left by the floods and David Cameron’s latest step has been to urge insurance companies to deal with claims for flood damage as fast as possible. He has not, however, said anything regarding ‘premium holidays’ for flood victims.
The problem is that the premium you are charged depends on many factors and one key aspect is the likelihood of making a claim. The more likely the claim, the higher the premium. If a household has previous experience of flooding, the insurance company will know that there is a greater likelihood of flooding occurring again and thus the premium will be increased to reflect this greater risk. There have been concerns that some particularly vulnerable home-owners will be unable to find or afford home insurance.
The key thing with insurance is that in order for it to be provided privately, certain conditions must hold. The probability of the event occurring must be less than 1 – insurance companies will not insure against certainty. The probability of the event must be known on aggregate to allow insurance companies to calculate premiums. Probabilities must be independent – if one person makes a claim, it should not increase the likelihood of others making claims.
Finally, there should be no adverse selection or moral hazard, both of which derive from asymmetric information. The former occurs where the person taking out the insurance can hide information from the company (i.e. that they are a bad risk) and the latter occurs when the person taking out insurance changes their behaviour once they are insured. Only if these conditions hold or there are easy solutions will the private market provide insurance.
On the demand-side, consumers must be willing to pay for insurance, which provides them with protection against certain contingencies: in this case against the cost of flood damage. Given the choice, rational consumers will only take out an insurance policy if they believe that the value they get from the certainty of knowing they are covered exceeds the cost of paying the insurance premium. However, if the private market fails to offer insurance, because of failures on the supply-side, there will be major gaps in coverage.
Furthermore, even if insurance policies are offered to those at most risk of flooding, the premiums charged by the insurance companies must be high enough to cover the cost of flood damage. For some homeowners, these premiums may be unaffordable, again leading to gaps in coverage.
Perhaps here there is a growing role for the government and we have seen proposals for a government-backed flood insurance scheme for high-risk properties due to start in 2015. However, a loop hole may mean that wealthy homeowners pay a levy for it, but are not able to benefit from the cheaper premiums, as they are deemed to be able to afford higher premiums. This could see many homes in the Somerset Levels being left out of this scheme, despite households being underwater for months. There is also a further role for government here and that is more investment in flood defences. If that occurs though, where will the money come from? The following articles consider flooding and the problem of insurance.
Articles
Insurers urged to process flood claims quickly BBC News (17/2/14)
Flood area defences put on hold by government funding cuts The Guardian, Damian Carrington and Rajeev Syal (17/2/14)
Flooding: 200,000 houses at risk of being uninsurable The Telegraph (31/1/12)
Govt flood insurance plan ‘will not work’ Sky News (14/2/14)
Have we learned our lessons on flooding? BBC News, Roger Harrabin (14/2/14)
ABI refuses to renew statement of principles for flood insurance Insurance Age, Emmanuel Kenning (31/1/12)
Wealthy will have to pay more for flood insurance but won’t be covered because their houses are too expensive Mail Online, James Chapman (7/2/14)
Buyers need ‘flood ratings’ on all houses, Aviva Chief warns The Telegraph, James Quinn (15/2/14)
Wealthy homeowners won’t be helped by flood insurance scheme The Telegraph(11/2/14)
Costly insurance ‘will create flood-risk ghettos and £4.3tn fall in house values’ The Guardian, Patrick Wintour (12/2/14)
Leashold homes face flood insurance risk Financial Times, Alistair Gray (10/2/14)
Questions
- Consider the market for insurance against flood damage. Are risks less than one? Explain your answer.
- Explain whether or not the risk of flooding is independent.
- Are the problems of moral hazard and adverse selection relevant in the case of home insurance against flood damage?
- To what extent is the proposed government-backed flood insurance an equitable scheme? Should the government be stepping in to provide insurance itself?
- Should there be greater regulation when houses are sold to provide better information about the risk of flooding?
- Why if the concept of opportunity cost relevant here?
- How might household values be affected by recent floods, in light of the issues with insurance?
How important are emotions when you go shopping? Many people go shopping when they ‘need’ to buy something, whether it be a new outfit, food/drink, a new DVD release, a gift, etc. Others, of course, simply go window shopping, often with no intention of buying. However, everyone at some point has made a so-called ‘impulse’ purchase.
There is only one article below, which is from the BBC and draws on data released from the National Employment Savings Trust’s survey. This report suggests that British people spend over £1 billion every year on impulse buys – purchases that are not needed, were not intended and are often regretted once the ‘high’ has worn off. Often, it is the way in which a product is advertised or positioned that leads to a spontaneous purchase – seeing chocolate bars/sweets at the tills; a product offered at a huge discount advertised in the window of a shop; 2 for 1 purchases; points for loyalty etc. All of these and more are simple techniques used by retailers to encourage the impulse buy. As consumer psychologist, Dr. James Intriligator says:
Retailers have clever ways of manipulating customers to spend more but if you stick to your plans you can avoid being affected by their tactics.
In other cases, it’s simply the frame of mind of the consumer that can lead to such purchases, such as being hungry when you’re food shopping or having an event to attend the next day and deciding to go window shopping, despite already having something to wear! Dr. Intriligator continues, saying:
Your ability to resist and make rational choices is diminished when your glucose levels are down … When you get irrational, you fall back on trusted brands, which often leads you to spend more money … Later in the shop, you’re more tired and less likely to resist [impulse buys]
But are such purchases irrational? One of the key assumptions made by economists (at least in traditional economics) is that consumers are rational. This implies that consumers weigh up marginal costs and benefits when making a decision, such as deciding whether or not to purchase a product. But, do impulse buys move away from this rational consumer approach? Is buying something because it makes you happy in the short term a rational decision? Behavioural economics is a relatively new ‘branch’ of economics that takes a closer look at the decisions of consumers and what’s behind their behaviour. The following article from the BBC considers the impulse buy and leaves you to consider the question of irrational consumers.
Article
How to stop buying on impulse BBC Consumer (30/5/13)
Questions
- If the marginal benefit of purchasing a television outweighs the marginal cost, what is the rational response?
- Using the concept of marginal cost and benefit, illustrate them on a diagram and explain how equilibrium should be reached.
- What is behavioural economics?
- What are the key factors that can be used to explain impulse buys?
- How can framing help to explain irrational purchases?
- If a product is advertised at a significant discount, what figure for elasticity is it likely to have to encourage further purchases in-store?
- Is bulk-buying always a bad thing?
