Showing posts with label Measuring GDP. Show all posts
Showing posts with label Measuring GDP. Show all posts

Friday, 30 May 2014

Measuring the Economy – A Knotty Problem

A change in focus is needed to make a real difference when measuring economic growth

Measuring the economy can be a bit like estimating the length of the proverbial piece of string.  Even pinning down what to measure before taking out your tape measure is tricky.  What is measured takes on even more importance when it is tied into government policy which aims to make us all better off.  This is a sobering thought at a time when improvements according to the traditional yardstick of GDP often fail to make a difference to the lives of many of us.  Changing what is used as a gauge for economic improvement can have significant consequences for the outcome of economic policy.

Being strung along by GDP

Rising inequality is a hot topic among economists at the moment.  Data shows that the wealth of the rich has increased considerably faster than for the less well-off over the past few decades.  Much of this can be attributed to the forces of globalization - a shortage of
skilled workers in the global marketplace has pushed up their pay while the opening up of countries such as China has resulted in a glut of low-skilled workers which has depressed their wages.  Technology has also added to this trend with computers reducing the clerical and administration work that had been a source of jobs for middle class workers.

Some see inequality as a necessary part of a capitalist economy with industrious people earning more due to their own hard work.  Others point to the social costs of inequality such as higher crime and more health problems and call for more policies to stem this trend.  The lack of advances in the earning power of a large portion of the population will inevitably have serious political consequences such as the rise of populist movements or a growing mistrust of capitalism among young people.  The issue is all the more urgent as it comes at a time when Western countries are struggling to maintain their place at the top of the global pecking order.

The combination of austerity measures and loose monetary policy in most countries is not doing much to address this issue and may be making the situation worse.  Cuts to government spending disproportionately hurt the less well-off while the wealthy have benefitted as quantitative easing has driven up stock prices.  These policies are based on the premise that creating growth in the overall economy will benefit us all.  But the data shows that, for example, while GDP in the UK is expected to reach its previous 2008 high this year, it will take a few more years for average earnings to recover lost ground. 

A different piece of string

The overall size of the economy is becoming increasingly difficult to measure.  So it might be better to focus more on the bit that matters most to people – what they earn and can spend.  Using median (real) earnings as a gauge of the economy would mean that economic growth would be more tangible for more people.  It is also a more simplistic measure which would require less manipulation although it would require some adjustments (to take into account changes in what we spend our money on and whether those goods change in price).

It would be a simple alteration that would have major implications for economic policy.  The welfare of normal people would be the central focus with other related issues such as unemployment also taking on greater importance.  Yet, this would not be a license for wages to rise inexorably as businesses would suffer and any artificially manufactured gains would only be temporary.  On the other hand, measures to help companies, such as lower corporate taxes, would also need to have a positive effect on wages. 


Increasing the median wage would have a more profound effect on the health of the economy and would involve more than simply boosting spending through an increase in debt.  Making progress on this goal would require more long-term policies such as investment in education and reskilling workers in declining sectors.  Lifting earnings would be hard work but the positive results would be genuinely worth the effort.

Wednesday, 26 March 2014

GDP growing out-of-date

GDP is becoming increasingly outdated as we do more and more online

It is hard for most of us to keep up with the blistering pace of changes in modern technology.  This is also true for economists and the discipline of economics.  Nowhere is this more glaringly obvious than when trying to assess how well the economy is doing.  Measures such as GDP (gross domestic product) hark from a time when our economy was mostly made up of physical goods which did not improve much over time (such as fridges or lawn mowers).  Advances in computing were already making life hard for economists, but greater use of online services may be the last straw.  How can we measure the economic output if we can get stuff online for free?

More is better?

GDP is an aggregate figure of the market value of all goods and services produced in an economy.  This way of measuring output focuses only on transactions where money changes hands and is based on the premise that more is better.  Things have become more complicated with rapid improvements in technology.  The problems started as exponential leaps in processing power made computers both faster and cheaper.  Progress is now so rapid that computers from just a few years ago are no longer available, making price comparisons over time near impossible (also causing issues with measuring inflation).

The impact is spreading as people find better ways of putting cheap computing to good use.  Replicating any content in digital form is virtually without cost.  Thus, the problems that initially confronted the music industry were soon felt by TV and movie studios as well as newspapers.  The effects are becoming more pervasive now that almost all of us have small computers in our pockets in the form of mobile phones.  Even mobile network providers, who would have been expected to benefit from greater use of mobile phones, are under pressure from cheaper alternative methods of communicating such as Skype or WhatsApp.

What really matters

Things we may have needed to pay for in the past are now considerably cheaper if not free, whether it be making international phone calls, reading the news, or posting job ads.  Computers are also able to do most of the grunt work of online services, making it easier to launch new products.  For instance, WhatsApp, which was recently purchased for US$19 billion, only has around 50 employees.  As a result, computers and the Internet can be used to provide more for less. 

It follows that a stationary GDP does not necessarily indicate a lack of progress.  This creates a dilemma for economists.  Economic data such as GDP is usually trimmed back to take account of inflation as higher prices by themselves do not mean that the economy is any larger.  Yet, better computers and cheap services provided online suggest that normal GDP figures need to be increased to account for the wealth of benefits that are available without having to pay more money.

All of this tweaking of GDP is making the actual data less and less significant.  The weak recovery in places such as the UK may be due to a shift towards doing things online as people try to tighten their belts.  It may be the case that similar or even greater amounts of goods and services are being consumed but online and at a lower cost.  How can we account for this?

Rather than trying to add up everything in the economy, we could look at median earnings and how people spend their cash (including online freebies).  This is likely to be a better gauge at a time when wages are stagnating for most people.  Finding out whether the average person is better off has more real world relevance than focusing solely on levels of production.