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A nudge in the right direction?

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

  1. Explain what is meant by bounded rationality.
  2. Give some examples from your own behaviour of decisions made using rules of thumb.
  3. Should we abandon models based on the assumption of rational maximising behaviour (e.g. attempts to maximise consumer surplus or to maximise profit)?
  4. 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.
  5. How might people be nudged to eat more healthily or to give up smoking?
  6. To what extent can financial incentives, such as taxes, fines, grants or subsidies be regarded nudging? Explain.
  7. 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?
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Going nuclear

The UK government has finally given the go-ahead to build the new Hinkley C nuclear power station in Somerset. It will consist of two European pressurised reactors, a relatively new technology. No EPR plant has yet been completed, with the one in the most advanced stages of construction at Flamanville in France, having experienced many safety and construction problems. This is currently expected to be more than three times over budget and at least six years behind its original completion date of 2012.

The Hinkley C power station, first proposed in 2007, is currently estimated to cost £18 billion. This cost will be borne entirely by its builder, EDF, the French 85% state-owned company, and its Chinese partner, CGN. When up and running – currently estimated at 2025 – it is expected to produce around 7% of the UK’s electricity output.

On becoming Prime Minister in July 2016, Theresa May announced that the approval for the plant would be put on hold while further investigation of its costs, benefits, security concerns, technological issues and safeguards was conducted. This has now been completed and approval has been granted subject to new conditions. The main one is that the government “will be able to prevent the sale of EDF’s controlling stake prior to the completion of construction”. This will allow the government to prevent change of ownership during the construction phase. Thus, for example, EDF, would not be allowed to sell its share of Hinkley C to CGN, which currently has a one-third share in the project. EDF and CGN have accepted the new terms.

After Hinkley the government will have a ‘golden share’ in all future nuclear projects. “This will ensure that significant stakes cannot be sold without the Government’s knowledge or consent.”

In return for their full financing of the project, the government has guaranteed EDF and CGN a price of £92.50 per megawatt hour of electricity (in 2012 prices). This price will be borne by consumers. It will rise with inflation from now and over the first 35 years of the power station’s operation. It is expected that the Hinkley C will have a life of 60 years.

Critics point out that this guaranteed ‘strike price’ is more than double the current wholesale price of electricity and, with the price of renewables falling as technology improves, it will be an expensive way to meet the UK’s electricity needs and cut carbon emissions.

Those in favour argue that it is impossible to predict electricity prices into the distant future and that the certainty this plant will give is worth the high price by current standards.

To assess the desirability of the plant requires an assessment of its costs and benefits. In principle, this is a relatively simple process of identifying and measuring the costs and benefits, including external costs and benefits; discounting future costs and benefits to give them a present value; weighting them by their probability of occurrence; then calculating whether the net present value is positive or negative. A sensitivity analysis could also be conducted to show just how sensitive the net present value would be to changes in the value of specific costs or benefits.

In practice the process is far from simple – largely because of the huge uncertainty over specific costs and benefits. These include future wholesale electricity prices, unforeseen problems in construction and operation, and a range of political issues, such as pressure from various interest groups, and attitudes and actions of EDF and CGN and their respective governments, which will affect not only Hinkley C but other future power stations.

The articles look at the costs and benefits of this, the most expensive construction project ever in the UK, and possibly on Earth..

Articles

Hinkley Point: UK approves nuclear plant deal BBC News (15/9/16)
Hinkley Point: What is it and why is it important? BBC News, John Moylan (15/9/16)
‘The case hasn’t changed’ for Hinkley Point C BBC Today Programme, Malcolm Grimston (29/7/16)
U.K. Approves EDF’s £18 Billion Hinkley Point Nuclear Project Bloomberg, Francois De Beaupuy (14/9/16)
Hinkley Point C nuclear power station gets government green light The Guardian, Rowena Mason and Simon Goodley (15/9/16)
Hinkley Point C: now for a deep rethink on the nuclear adventure? The Guardian, Nils Pratley (15/9/16)
Hinkley Point C finally gets green light as Government approves nuclear deal with EDF and China The Telegraph, Emily Gosden (15/9/16)
UK gives go-ahead for ‘revised’ £18bn Hinkley Point plant Financial Times, Andrew Ward, Jim Pickard and Michael Stothard (15/9/16)
Hinkley Point: Is the UK getting a good deal? Financial Times, Andrew Ward (15/9/16)
Hinkley Point is risk for overstretched EDF, warn critics Financial Times, Michael Stothard (15/9/16)
Hinkley C must be the first of many new nuclear plants The Conversation, Simon Hogg (16/9/16)

Report

Nuclear power in the UK National Audit Office, Sir Amyas Morse, Comptroller and Auditor General (12/7/16)

Questions

  1. Summarise the arguments for going ahead with Hinkley C.
  2. Summarise the objections to Hinkley C.
  3. What categories of uncertain costs and uncertain benefits are there for the project?
  4. Is the project in EDF’s interests?
  5. How will the government’s golden share system operate?
  6. How should the discount rate be chosen for discounting future costs and benefits from a project such as Hinkley C?
  7. What factors will determine the wholesale price of electricity over the coming years? In real terms, do you think it is likely to rise or fall? Explain.
  8. If nuclear power has high fixed costs and low marginal costs, how does this affect how much nuclear power stations should be used in a situation of daily and seasonal fluctuations in demand?
  9. How could ‘smart grid’ technology smooth out peaks and troughs in electricity supply and demand? How does this affect the relative arguments about nuclear power versus renewables?
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The UK gender wage gap

Women in the UK on average earn less per hour than men. According to the Annual Survey of Hours and Earnings, the mean hourly pay for women in 2015 was 17.5% less than that for men. This figure is for all employees, full and part time. As far as full-time employees is concerned, the gap was slightly smaller at 13.9%. Nevertheless, as you can see from Table 6 in the linked Excel file, these gaps have decreased in recent years – but only slightly.

A recent paper from the Institute for Fiscal Studies has disaggregated the figures to give a better picture of this wage gap. It finds that having children is a major contributing factor to the gap. It also finds that this has a bigger impact on the earnings of graduates and those without a degree but with A levels.

On entry to the labour market, men and women earn roughly the same. People’s wages tend to rise during their 20s, but men’s rise slightly faster than women’s, causing a pay gap to open and widen – but slowly at first. Average (mean) men’s wages continue to grow during their 30s and a bit during their 40s. However, average women’s wages flatline. Thus the wage gap grows substantially, especially for the higher educated.

The paper argues that the arrival of children is a major contributing factor to this picture. It looks at the gap before and after the arrival of children. “The crucial observation is that the gap opens up gradually after the first child arrives and continues to widen for many years after that point.” By 12 years after the first child is born, the wage gap has widened to 33%.

The paper does not offer reasons for the small gap that exists before the arrival of children. But it does give possible reasons for the widening gap after having children. A major one, it suggests, has to do with labour market experience.

“As women are likely to do less paid work after the arrival of children, the level of labour market experience they have falls further and further behind that of their male counterparts, and the wage gap therefore widens.” They may also miss out on promotions.

Each year a woman spends away from the labour market is associated with an average 2% drop in pay compared with those who remain in work. For those with at least A levels, the penalty is 4%; but there is no drop in pay for those without A levels.

Other possible explanations include mothers taking work that requires a lower skill level, and at lower hourly pay, in order to gain flexibility in working hours. However, the evidence suggests that women who move to part-time work on having a child suffer no immediate drop in pay. But their hourly pay does grow more slowly, thus contributing to a widening of the gap.

Another explanation is employers exercising market power to discriminate against women with children. The paper does not consider this explanation.

The articles discussing the paper look at policy implications and identify various things that can be done to narrow the gap. Read the paper and articles and try answering the questions below.

Videos and podcasts

IFS: gender pay gap widens after first child Compendium of News Reports from BBC News at Six, Channel 4 News, ITV News at Ten and BBC Newsnight from Incorrigible Forever on YouTube (23/8/16)
Gender Pay Gap Hits Women With Children Hardest Sky News (23/8/16)
In Business: Supportive partner = success at work World of Business, BBC Radio 4, Peter Day (25/8/15)
Gender Pay Gap More or Less, BBC Radio 4, Tim Harford (26/8/16)
Gender pay gap: Why do mums increasingly earn less? BBC Victoria Derbyshire programme (23/8/16)

Articles

UK women still far adrift on salary and promotion as gender pay gap remains a gulf The Guardian, Katie Allen (23/8/16)
Gender pay gap: mothers returning to work earn a third less than men The Telegraph, Tim Wallace (23/8/16)
Mothers’ pay lags far behind men BBC News (23/8/16)
Four ways the gender pay gap isn’t all it seems BBC News Magazine, Simon Maybin (29/8/16)
Six ways to tackle the gender pay gap BBC News, Emma Atkinson (23/8/16)
Wage gap for UK women unchanged in 20 years Financial Times, Gemma Tetlow (23/8/16)
The UK’s slow march to gender pay equality Financial Times (23/8/16)
Gender Pay Gap For Mothers Widens For 12 Years After Having Children, New Research Finds Huffington Post, Jack Sommers (23/8/16)
Motherhood costs women a third of their salary compared to men, report reveals Independent, Joe Watts (23/8/16)
The gender pay gap means that more women will be in poverty later in life – but there is something the government can do Independent, Claire Turner (26/8/16)
Gender pay gap won’t close until 2069, says Deloitte The Guardian, Katie Allen (24/9/16)

Papers and Reports

Gender wage gap grows year on year after childbirth as mothers in low-hours jobs see no wage progression IFS Press Release (23/8/16)
The Gender Wage Gap IFS Briefing Note BN18, William Elming , Robert Joyce and Monica Costa Dias (23/8/16)
Women in STEM: Technology, career pathways and the gender pay gap Deloitte (September 2016)

Data

Gender pay differences: Annual Survey of Hours and Earnings: 2015 Provisional Results ONS Statistical Bulletin (18/11/15)
All data related to Annual Survey of Hours and Earnings: 2015 Provisional Results ONS datasets (18/11/15)
ASHE 1997 to 2015 selected estimates (See Tables 1 to 4, 6 and 9) ONS dataset (18/11/15)
All Employees – ASHE: Table 1 ONS dataset (18/11/15)

Questions

  1. Identify possible reasons for the wage gap between men and women.
  2. Why is the median wage gap different from the mean wage gap?
  3. Why is the wage penalty for periods without work greater for more highly educated women?
  4. To what extent is the gender wage gap a reflection of marginal productivity differences?
  5. Is the gender pay gap primarily about men and women being paid differently for doing the same job?
  6. What evidence is provided by the Chartered Management Institute (CMI) on women’s lack of pay progression?
  7. What could the government do to reduce the wage gap?
  8. Discuss the relative effectiveness of different policy alternatives.
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New UK monetary policy measures – somewhat short of the kitchen sink

The Bank of England has responded to forecasts of a dramatic slowdown in the UK economy in the wake of the Brexit vote. On 4th August, it announced a substantial easing of monetary policy, but still left room for further easing later.

Its new measures are based on the forecasts in its latest 3-monthly Inflation Report. Compared with the May forecasts, the Report predicts that, even with the new measures, aggregate demand growth will slow dramatically. As a result, over the next two years cumulative GDP growth will be 2.5% lower than it would have been with a Remain vote and unemployment will rise from 4.9% to around 5.5%.

What is more, the slower growth in aggregate demand will impact on aggregate supply. As the Governor said in his opening remarks at the Inflation Report press conference:

“The weakness in demand will itself weigh on supply as a period of low investment restrains growth in the capital stock and productivity.

There could also be more direct implications for supply from the decision to leave the European Union. The UK’s trading relationships are likely to change, but precisely how will be unclear for some time. If companies are uncertain about the future impact of this on their businesses, they could delay decisions about building supply capacity or entering new markets.”

Three main measures were announced.

•  A cut in Bank Rate from 0.5% to 0.25%. This is the first time Bank Rate has been changed since March 2009. The Bank hopes that banks will pass this on to customers in terms of lower borrowing rates.
•  A new ‘Term Funding Scheme (TFS)’. “Compared to the old Funding for Lending Scheme, the TFS is a pure monetary policy instrument that is likely to be more stimulative pound-for-pound.” The scheme makes £100bn of central bank reserves available as loans to banks and building societies. These will be at ultra-low interest rates to enable banks to pass on the new lower Bank Rate to customers in all forms of lending. What is more, banks will be charged a penalty if they do not lend this money.
•  An expansion of the quantitative easing programme beyond the previous £375 billion of gilt (government bond) purchases. This will consist of an extra £60bn of gilt purchases and the purchase of up to £10bn of UK corporate bonds.

The Bank recognises that there is a limit to what monetary policy can do and that there is also a role to play for fiscal policy. The new Chancellor, Philip Hammond, is considering what fiscal measures can be taken, including spending on infrastructure projects. These are likely to have relative high multiplier effects and would also increase aggregate supply at the same time. But we will have to wait for the Autumn Statement to see what measures will be taken.

But despite the limits to monetary policy, there is more the Bank of England could do. It already recognises that there may have to be a further cut in Bank Rate, perhaps to 0.1% or even to 0% (the ECB has a 0% rate). There could also be additional quantitative easing or additional term funding to banks.

Some economists argue that the Bank should go further still and, in conjunction with the Treasury, provide new money directly to fund infrastructure spending or tax cuts, or even as cash handouts to households. This extra money provided to the government would not increase government borrowing.

We discussed the use of this version of ‘helicopter money’ in the blogs, A flawed model of monetary policy, Global warning and People’s quantitative easing. Some of the articles below also consider the potential for this type of monetary policy. In a letter to The Guardian 35 economists advocate:

A fiscal stimulus financed by central bank money creation [which] could be used to fund essential investment in infrastructure projects – boosting the incomes of businesses and households, and increasing the public sector’s productive assets in the process. Alternatively, the money could be used to fund either a tax cut or direct cash transfers to households, resulting in an immediate increase of household disposable incomes.

Webcasts and podcasts

Inflation Report Press Conference Bank of England, Mark Carney (4/8/16)
Bank spells out chance of further rate cut this year BBC Radio 4 Today Programme, Ben Broadbent, Deputy Governor of the Bank of England (5/8/16)
Broadbent Ready to Back Another BOE Rate Cut Amid Slowdown Bloomberg, Chris Wyllie (5/8/16)
What’s Top of Mind? ‘Helicopter Money’ Goldman Sachs Macroeconomic Insights, Allison Nathan (April 2016)

Articles

Bank of England measures
Interest rate cut: What did the Bank of England announce today and how will it affect you? Independent, Ben Chu (5/8/16)
This is the Bank of England’s all-action response to Brexit The Guardian, Larry Elliott (4/8/16)
Bank of England unveils four-pronged stimulus package in bid to avoid Brexit recession The Telegraph, Szu Ping Chan (4/8/16)
Record-breaking Bank of England Financial Times, Robin Wigglesworth (4/8/16)
The Bank of England has delivered – now for a fiscal response Financial Times (4/8/16)
Bank of England Cuts Interest Rate to Historic Low, Citing Economic Pressures New York Times, Chad Bray (4/8/16)
Sledgehammer? This is more like the small tool to fix a fence The Telegraph, Andrew Sentance (5/8/16)
All eyes are on Hammond as Bank runs low on options The Telegraph, Tom Stevenson (6/8/16)
Bank of England’s stimulus package has bought the chancellor some time The Guardian, Larry Elliott (7/8/16)

Helicopter money
A post-Brexit economic policy reset for the UK is essential Guardian letters, 35 economists (3/8/16)
Cash handouts are best way to boost British growth, say economists The Guardian, Larry Elliott (4/8/16)
Helicopter money: if not now, when? Financial Times, Martin Sandbu (2/8/16)
The helicopters fly on for now, but one day they will crash The Telegraph, Tom Stevenson (23/7/16)
Is the concept of ‘helicopter money’ set for a resurgence? The Conversation, Phil Lewis (2/8/16)
Helicopter money talk takes flight as Bank of Japan runs out of runway Reuters, Stanley White (30/7/16)
Helicopters 101: your guide to monetary financing Deutsche Bank Research, George Saravelos, Daniel Brehon and Robin Winkler (15/4/16)
Helicopter money is back in the air The Guardian, Robert Skidelsky (22/9/16)

Bank of England publications

Inflation Report, August 2016 Bank of England (4/8/16)
Inflation Report Press Conference: Opening Remarks by the Governor Bank of England, Mark Carney (4/8/16)
Inflation Report Q&A Bank of England Press Conference (4/8/16)
Inflation Report, August 2016: Landing page Bank of England (4/8/16)

Questions

  1. Find out the details of the previous Funding for Lending (FLS) scheme. How does the new Term Funding Scheme (TFS) differ from it? Why does the Bank of England feel that TFS is likely to be more effective than FLS in expanding lending?
  2. What is the transmission mechanism between asset purchases and real aggregate demand?
  3. What factors determine the level of borrowing in the economy? How is cutting Bank Rate from 0.5% to 0.25% likely to affect borrowing?
  4. If the Bank of England’s latest forecast is for a significant reduction in economic growth from its previous forecast, why did the Bank not introduce stronger measures, such as larger asset purchases or a cut in Bank Rate to 0.1%?
  5. What are the advantages and disadvantages of helicopter money in the current circumstances? If helicopter money were used, would it be better to use it for funding public-sector infrastructure projects or for cash handouts to households, either directly or in the form of tax cuts?
  6. How does the Bank of England’s measures of 4 August compare with those announced by the Japanese central bank on 29 July?
  7. What effects can changes in aggregate demand have on aggregate supply?
  8. What supply-side policies could the government adopt to back up monetary and fiscal policy? Are the there lessons here from the Japanese government’s ‘three arrows’?