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  • Measuring the Effect of Patent Rights on Innovation

    At Vox , Alberto Galasso and Mark Schankerman share some findings from their research into the impact of patent rights on innovation. While once economists thought that protecting patent rights was essential to encourage innovation, that now seems less clear. In fact, Galasso and Schankerman write that some scaling back of patent rights could spark more innovation, especially in the tech sector: We find that the loss of patent protection leads to about a 50% increase in subsequent citations to the focal patent, on average. This evidence shows that, at least on average, patents block cumulative innovation. One may be concerned that this is a publicity effect from the court's decision. However, we show that this impact begins only after about two years following the court decision, which is consistent with the onset on follow-on innovation rather than simply being a ‘media effect’ from press coverage associated with the court decision. We also find that the impact of patent invalidation on subsequent innovation is highly heterogeneous. There is substantial variation across broad technology areas. As illustrated by the figure below, patent invalidation has a large and statistically significant impact on cumulative innovation in the fields of computers and communications, electronics, and medical instruments (including biotechnology). However, we find only a small and statistically insignificant effect in the chemical, pharmaceutical, or mechanical technology field. We investigate the source of this heterogeneous effect and find that the technology fields where the impact of patent invalidation is strongest are characterised by two features: complex technology (where new products rely on numerous patentable elements) and high fragmentation of patent ownership among diverse firms. This finding is consistent with predictions of the economic theories that emphasise bargaining failure in licensing as the source of blockage. Read Do patent rights impede follow-on innovation? here .
  • Measuring the Importance of a Company's Founder to Its Long Term Survival

    In an effort to determine how much entrepreneurs matter, UK economists Sascha Becker and Hans Hvide sifted through data on Norwegian companies (apparently Norway keeps the most detailed records on businesses) and looked at the performance of firms after the death of their founders. They then compared that with the performance of "twin" companies that had not lost their founder. The companies that lost their founders had a 20% lower survival rate. Becker and Hvide share some of the results at Vox : We expected businesses that experienced the death of a founder-entrepreneur to have some kind of a dip in performance immediately after the death owing to the upheaval, but we anticipated there would be a bounce back. However, the results were quite surprising. Even four years after the death, most firms show no sign of recovering and the negative effect on performance appears to continue even further beyond that, as illustrated by the figure. A simple explanation for our findings could be reverse causality: poor firm performance leads to entrepreneurs having a higher probability of dying. To deal with this possibility, we look at whether there are pre-treatment differences between treated and matched controls. We do not find evidence of pre-treatment effects, as illustrated by the figure. This suggests that reverse causality is not a major force behind our findings. For how long in a firm's life does the entrepreneur matter? The very youngest companies suffered most after the founder’s death, but significant effects were still felt by companies that were up to ten years old. The degree of ownership the founder had retained matters. The death of a founder with a 50% stake had about half the impact of losing a founder who had retained a majority shareholding. The level of formal education of the founder also showed a strong correlation with the damage that person’s death could have. Those with the most highly educated founders experienced the largest drops in sales performance after the founder’s death. There was no difference between the results for family and non-family companies, between rural and urban businesses, or when comparisons were made between different sectors. It could simply be that the founder was a fantastic sales person who generated a disproportionately high level of sales. On the other hand, it could be down to a leadership effect, where the founder-entrepreneur inspires the employees to perform as best they can and without the presence, that drive slips away. Possibly, entrepreneur death induces a voluntary shutdown by heirs of unprofitable firms that provided the entrepreneur with private benefits, so that there is no social loss. Using quantile regressions, we find strong negative effects of entrepreneur death on sales and assets also among successful firms. The bankruptcy code in Norway is similar to Chapter 7 in the US bankruptcy code, i.e., bankruptcy is associated with creditors taking control and is not 'voluntary' as in Chapter 11 in the US bankruptcy code. We find that firms where the entrepreneur dies have twice the probability of going bankrupt. This, again, is evidence supporting that entrepreneurs create value. Read Do entrepreneurs matter? here .
  • Fiscal Policy and Marginal Propensity to Consume

    We can not measure the impact of fiscal policy without measuring how citizens/consumers respond. At VoxEU , Tullio Jappelli and Luigi Pistaferri argue that we need to have a better understanding of marginal propensity to consume (the ratio of change in consumption to the change in income) in order to evaluate the effectiveness of stimulus measures. A major problem in estimating marginal propensities is identifying shocks that affect consumption via changes in income, rather than directly – say through shifts in preferences or wealth. This is necessary since otherwise we cannot be sure we have isolated the impact of income on consumption per se. In other words, we have to isolate the exogenous shocks to income which can be used to track consumption behaviour after a shock. In recent research we show how this can be overcome by using recent survey data alongside information on how much consumers would spend due to an unexpected windfall gain (Jappelli and Pistaferri 2013). The 2010 Italian Survey of Household Income and Wealth is designed to elicit information on how much people would consume or save were they unexpectedly to receive a reimbursement equal to their average monthly income. The survey question we use is the following: “Imagine you unexpectedly receive a reimbursement equal to the amount your household earns in a month. How much of it would you save and how much would you spend? Please give the percentage you would save and the percentage you would spend”. The responses to this question provide a distribution of the marginal propensity to consume that we can relate to observable characteristics and, most importantly, compare with the predictions of intertemporal consumption models. In our sample, we find that the average marginal propensity to consume is 48%, at the high end of current estimates based on survey data. But most importantly, as shown in Figure 1, we find substantial heterogeneity in people’s responses. The marginal propensity to consume declines sharply with cash-on-hand, from around 65% in the lowest cash-on-hand percentiles to some 30% for the richest households. Hence, households with low cash-on-hand (or low income and wealth) exhibit a much higher marginal propensity to consume than affluent households. Read Fiscal policy and consumption here .
  • Economic History Lessons for 'Leaderless Global Economy'

    At Vox , Peter Termin and David Vines argue that policymakers need to spend a little time on economic history for guidance on how to best manage the global economic challenges they now face. The lessons to take from global economic growth over the last 200 years, they say, are that international cooperation is key, and that it is best to deal with unemployment first and deficits second. But the most important step seems to be to recognize that we are going through a period of transition. In our recent book (Temin and Vines 2013), we argue that the transition from British to American hegemony was not made quickly or easily. Britain was exhausted by the war, Germany was burdened by reparations. Even though the US intervention was critical to Allied success in World War I, the US abandoned its European interests after the war. War debts led to hyperinflations in the early 1920s and this was followed by an interim period of lending to Germany in the mid 1920s and some consequent recovery. But the reparations problem had not been solved. The departure of Germany from the gold standard in the currency crisis of 1931, followed by Britain’s exit, and then by tight policies in the US, ultimately led to the Great Depression in the 1930s. The absence of a hegemon to restore cooperation and prosperity was all too evident. Massive unemployment persisted, only ending with the beginning of World War II. We are now in a similar transition. The US squandered its leadership with two elective wars and massive tax cuts, and with low interest rates and a property boom. Countries normally raise taxes to fight wars, although seldom far enough to avoid inflation. The US went in the opposite direction, under the idea that ‘deficits don’t matter’, at the same time as tolerating a property boom, simply because inflation did not rise. Since the boom collapsed, Americans have been left wondering how to deal with their resulting fiscal debts. Europeans started this century not with new wars, but a new currency. As a result, Germany has squandered its leadership within Europe, because the architecture of the new currency union was flawed. The idea was that international capital flows would become internal capital flows and, because of this, would cease to be an object of worry. We now know that this was wrong. The money which northern European banks lent to southern peripheral countries in Europe led to a boom there, as well as rising costs. And the money was not well used; it supported speculative property booms and consumption, rather than investment in productive tradable good industries. All went well during the ‘Great Moderation’ – the reduction in the volatility of business cycle fluctuations starting in the mid-1980s – but the system broke down during the Global Crisis. The money which banks lent to countries in the European periphery ended up as fiscal debts (once the banks had been rescued), and some of these fiscal debts have since became the obligations of the ECB. It is not clear within the Eurozone which countries will end up being responsible for resolving these fiscal debts. Read The leaderless economy: Can economic history suggest lessons here .
  • Testing Okun's Law--Are Jobs and Growth Still Linked?

    In 1962, Arthur Okun wrote that "changes in the level of economic activity are associated with shifts in the composition of employment and output by industry." But the nature of the economic recovery in the U.S. (as slow as it may seem) has made reconsidering Okun's Law popular (if not necessary). In a post for VoxEU , Laurence Ball , Daniel Leigh , and Prakash Loungani examine whether jobs and output can now be decoupled: Figure 1 shows peak-to-trough declines in output for a group of OECD countries during the Great Recession against the change in unemployment over the same period. The correlation is essentially zero. In the language of economics textbooks, Figure 1 suggests a breakdown of Okun’s Law, the short-run negative relationship between output and unemployment reported by Arthur Okun in 1962. Figure 1. The Great Recession: Peak-to-trough output and unemployment changes (simple scatter plot) We believe the casual impression that "Okun’s broken" is misleading (Ball, Leigh and Loungani 2013). Two adjustments are needed to restore Okun’s Law (as shown in Figure 2): The first adjustment is to account for differences in the duration of the recessions; For the set of recessions shown in these charts, the period from peak to trough ranges from two quarters to seven quarters. As we show in our paper, Okun’s Law implies a relationship between the changes in unemployment and output only if we control for this factor. The second adjustment accounts for the fact that, historically, the coefficient in Okun’s Law varies across countries. Figure 2. The Great Recession: Peak-to-trough output and unemployment changes (with adjustments for duration of recessions and country-specific Okun coefficients) Read the full post here .
  • Hidden Gains in Trade Liberalization

    At Vox , Amit Khandelwal , Peter K. Schott , and Shang-Jin Wei argue that the benefits of opening up trade are often greater than expected because the elimination of some institutions may remove "corrupt customs agents, bureaucratic red tape and the withholding of goods in bonded warehouses." In their post, they look at the example of textiles coming from China following the abolishment of quotas in 2005: Figure 1 displays the growth of constrained versus unconstrained Chinese apparel and textile exports from 2000 to 2005. As illustrated in the figure, the removal of quotas in 2005 led to a substantially larger increase in the growth of previously bound products versus products that were exported quota free. Examining the sources of this relative growth can reveal a great deal about whether or not the Chinese government allocated quotas efficiently. In theory, an efficient quota-licensing regime, like an auction, establishes a per-unit fee that equates the supply and demand for quota. This fee induces self-selection based on productivity, as only the most productive firms earn profits in the export market net of the licensing fee. Consequently, removal of efficiently allocated quotas has three observable effects. First, it causes the exports of the most productive incumbents to jump relative to those of less productive incumbents. Second, it allows less productive firms to profitably enter the export market. Finally, entrants and incumbents have opposing effects on export prices. Removal of the licence fee pushes incumbents’ prices down, while entry by relatively less productive exporters pushes prices up. The key prediction is that export growth and price declines are dominated by incumbents. In fact, we find that the post-quota export growth and price declines of quota-bound versus quota-free goods are dominated by entrants rather than incumbents. Furthermore, we show that the entrants behind this trend are primarily privately owned domestic and foreign firms, and that their growth comes at the expense of state-owned enterprises, who are on average nearly a third less productive than their private-sector counterparts. Additional evidence of misallocation comes from the fact that nearly two-thirds of the price decline observed in the year quotas are removed is due to entrants rather than incumbents. These trends provide strong evidence against the hypothesis that quota licences were allocated on the basis of firm efficiency. Based on a coarse measure of productivity differences across ownership types, the observed reallocations of market share in quota-bound exports imply that industry productivity increased 21% when quotas were removed. This productivity increase is a combination of the distortion caused by the quotas and the distortion caused misallocated quota licences. To estimate the relative contribution of removing misallocation versus the actual quota, we compare numerical solutions of the efficient export-licensing model noted above to a counterfactual calibrated to match the importance of entry that we see in the data. We find that 71% of the overall gain in productivity from removing quotas is due to the elimination of quota misallocation versus 29% for the removal of the quota itself. Our estimates suggest that simply replacing the government's actual licensing institution with an auction would raise industry productivity by 15 percentage points. This implies a sizeable drag on aggregate productivity due to misallocation. Read Trade liberalisation and embedded institutional reform: Evidence from Chinese exporters here .
  • A Defense of 'Cuddly Capitalism' and Innovation in Nordic Countries

    At VoxEU , three Finnish economists respond to a recent paper in which the authors assert that "cuddly capitalist" countries like Finland and other Nordic economies, "free ride" off of "cut-throat" capitalist countries like the U.S. Not surprisingly, Niku Määttänen , Mika Maliranta , and Vesa Vihriälä see a different picture. First, they take issue with the idea that the U.S. economy is more innovative: As Acemoglu et al. (2012a, 2012b) stress, innovation requires risk-taking. In a very innovative economy, one would therefore expect to find intensive job creation and job destruction, as firms that are successful in innovative activities expand rapidly while others are forced to exit the market. The available data do not suggest that the US economy is unambiguously more dynamic than the Nordic economies (Bassanini and Marianna 2009, OECD 2004). In Denmark, worker reallocation is more intensive, and in Finland almost as intensive as in the US (Table 1). Moreover, time series from the US indicate a marked decline in job and worker flows since the late 1990s (Davis et al. 2012), whereas – at least in Finland – both flows have stayed intensive (Ilmakunnas and Maliranta 2011). The authors go on to challenge the assumption that there is less dynamism in Nordic countries like Finland, and make the case that these are actually highly innovative economies in which entrepreneurs are encouraged to take risks for some of the same reasons they might be described as "cuddly" countries: One explanation for Nordic good performance might be that they are better in mobilising human resources. While hours per capita are higher in the US, a larger share of the working age population is employed in the Nordics owing to more inclusive educational, social and employment policies. This may imply that talents are harvested better for gainful economic activity. A second explanation could be the rather determined public policies to promote innovation. A third explanation might be that the economic incentives for innovation in the Nordics, while weaker than in the US, are not miserable after all, at least not across the board. For instance, all Nordic countries have introduced dual income taxation, according to which capital incomes are taxed at a flat rate. This helps in motivating entrepreneurs, despite quite progressive taxes on earned income. Sweden has recently encouraged wealth accumulation by abolishing wealth and inheritance taxes altogether. A well-designed safety net may also work to promote risk-taking. In particular, unemployment insurance may help risk-taking entrepreneurs by making it is easier for them to hire workers (see Acemoglu and Shimer 2000). Read Are the Nordic countries really less innovative than the U.S.? here .
  • Understanding Unprecedented Fluctuations in US Aggregate Wealth

    Over the last half century, wealth in the US "fluctuated substantially," as shown by CREI researchers Vasco Carvalho , Alberto Martin , and Jaume Ventura at Vox : Carvalho, Martin, and Ventura were struck by the rapid rise in wealth we see in the mid-1990s and 199-2006. "Unprecedented" bubbles, that then popped. At first sight, the notion that part of wealth is a bubble or a pyramid scheme might seem quite abstract or exotic. But it is easy to find real-world situations that correspond fairly well to this concept. Consider, for instance, the stock of a firm that is traded at a price that exceeds its fundamental, i.e. the net present value of the dividends that this stock will generate. This ‘overvalued’ price might be part of an equilibrium if buyers rationally expect to sell these stocks in the future at a price that also exceeds the fundamental. Consider, alternatively, credit given to a firm in excess of the net present value of the cash flows that this firm will generate. This ‘excessive’ credit might be part of an equilibrium if creditors rationally expect that the firm will be able to raise enough credit in the future to repay them. Overvalued stock prices and excessive credit can be therefore be interpreted as bubbles or pyramid schemes, that is, as voluntary contributions to the firm's financing that give the right to the next voluntary contribution. Once we think in these terms, the concept of a bubble ceases to be abstract or exotic and it becomes quite mundane. Indeed, it seems to capture the type of real-world behaviour that our macroeconomic models should be generating as an equilibrium phenomenon. Still, standard macroeconomic models largely ignore the possibility of bubbles and try to explain all fluctuations in wealth as a result of fluctuations in the fundamental. We show the limitations of this approach by performing a simple calculation of this fundamental. To do this, we measure the cash flows that US productive assets generate as capital income, net of taxes and investment. We then compute the expected present discounted value of these cash-flows by following Robert J Shiller (2005) in making two assumptions: (i) the expected rate of return is constant for all time horizon, and it is well approximated by the average real return on wealth over the 1950-2010 period; and (ii) out-of-sample cash-flows grow at a constant rate - given by the historical average of their real growth rate - and we resort to perfect foresight for within-sample cash-flows. This procedure generates an estimate of the fundamental that is plotted as the circled line in Figure 1. Read Understanding bubbly episodes here .
  • Impact of a Business's 'Socially Responsible' Practices on Employee Productivity

    Michael Vlassopoulos and Mirco Tonin , lecturers in economics at the University of Southampton, have been conducting research into the impact that Corporate Social Responsibility initiatives have on workers at the companies that take ton those initiatives. At VoxEU , they provide a summary of their initial findings. The takeaway here seems to be that there are real benefits to CSR strategies when it come to worker productivity. Specifically, they are associated with a 20% rise in productivity and this effect is present whether the donation to the charity is lump sum or related to subject’s performance. This suggests that what motivates workers is the presence of social incentives rather than their specific form. Consistent with this, in the real world firms introduce CSR policies in a variety of ways. For example, in the US, large retailers and grocery chains, such as Target Corporation and Whole Foods Market donate 5% of their pre-tax profits to charitable groups, while in the UK there exists the so-called Percent Club for companies that pledge to donate at least 1% of their pre-tax profits to charitable causes, with members like GlaxoSmithKline, Deloitte, and the John Lewis Partnership. On the other hand, other firms opt not to explicitly link their CSR budget to profits. When we compare the effectiveness of private and social incentives in boosting productivity, we find that social incentives are at least half as effective in motivating subjects as compared to private incentives. What this means is that an employer that spends $1 on a charitable cause will generate at least the same increase in productivity as $0.50 spent on paying workers directly. If we consider the additional gains arising from tax benefits, and additional advantages coming from the appeal of CSR to customers, regulators, or investors, we may well conclude that social incentives are cost-effective. Also, one could expect social incentives to become increasingly more effective in motivating employees relative to private incentives as earnings increase and the marginal utility of money decreases. This may be one of the factors behind the increasing importance of CSR policies. For instance, in a survey by the Economist Intelligence Unit (2007), 34% of corporate executives indicated that CSR was a high or very high priority for their firms three years earlier, compared to 55% saying so with regard to the present and almost 70% expressing their expectations on how high a priority it will be three years hence. Read Do social incentives matter? Evidence from an online real effort experiment here .
  • Manifesto for a European Banking Union

    Some leading European economists are arguing that the euro zone needs a strong banking union in order to bring about a sustained recovery and a "stable financial architecture" throughout the EU. 100+ German, Austrian, and Swiss economists have now released a manifesto stating the case for establishing a unified European banking structure "to break the link between the funding of private banks and the public purse." Here is an excerpt, from VoxEU : In the course of the crisis, fiscal budgets are being tapped to refinance systemically relevant financial institutions. At the same time, financial institutions continue to play a central role in financing national governments, lending money to them and holding their debt. An unavoidable consequence is that bank failures have led to sovereign debt crises and sovereign debt crises have led to banking crises, leading to growing mistrust of both national banking systems and government finance. The situation is aggravated by the fact that international investors, driven by fear of total collapse, have withdrawn funding to struggling countries, both for governments and for banks. This has in turn led to a balkanisation of national financial markets and threatens not only the European monetary union but the European integration project as a whole. Only by breaking the link between the refinancing of banks and the solvency of national governments will it be possible to stabilise the supply of credit in crisis countries. If the refinancing of banks – and the insurance of bank deposits – can be made independent of the financial state of the respective domiciling country, national sovereign crises can be decoupled from the private sector financing. In this way, contractionary demand shocks induced by corrective national fiscal policy can be softened by a broadening of the supply of credit. A European backbone to the refinancing of banks will dampen the impact of the coming fiscal consolidation. An indispensable requirement for this is a set of uniform regulatory banking standards which are implemented by a single European authority. Deeper financial integration and a de-coupling of government and banking finance are essential elements for a more stable financial architecture in Europe. These steps are important for breaking the vicious circle between sovereign debt and banking crises. A monetary union with free capital flows cannot work reasonably without a unified banking framework. For this reason, the decisions of the last EU summit represent a move in the right direction. Now it is crucial to implement these decisions, in order to create a durable solution with uniform European structures. You can read the original manifesto, in German, here . For an English translation, click here .
  • How Many European Economists Does it Take to Understand the Eurozone Crisis?

    European economists may not be as pessimistic about the future of Europe and the Eurozone as the headline writers. A group of economists at the Swiss Economic Institute surveyed Association of European Conjuncture Institutes ( AIECE ) and found that the majority of the respondents expect positive growth of GDP across Europe starting this quarter and picking up more a bit later in the year. Also, most of the economists do not expect Greece to exit the Eurozone. And they gave their opinions on the best way to deal with the Eurozone crisis. From VoxEU: The majority of the AIECE institutes prefer a stronger involvement of the EU and the Eurozone institutions (Figure 3), including nine institutes in favour of a fiscal union. The fiscal compact, meanwhile, is preferred by only five institutes. In line with the current political discussion in Greece, France, and the UK, four institutes emphasise the need for more flexible austerity programmes. In addition, the institutes were asked to assess the ECB’s commitment to engage in solving the on-going crisis. Two institutes consider the current ECB involvement too strong, while 11 think it is just right and 10 regard it as insufficient. Read How do economists assess the european economic crisis? A survey here .
  • Impact of Monetary Policy on Housing Prices

    At VoxEU , economists Christian Hott and Terhi Jokipii have a rather concise analysis of how low interest rates spur housing bubbles. The conclusion is not surprising, but it is useful to have the case laid out so neatly. Hott and Jokipii compare actual housing prices with "fundamental housing prices" across 14 countries. And it is striking just how much the price levels deviate. Take a look at what they found for six countries: Read about the authors' conclusions and methodology here .
  • Eichengreen and O'Rourke: World Trade Recovery Then and Now

    Two years ago Barry Eichengreen and Kevin O'Rourke compared the Great Recession to the Great Depression, examining the rate of recovery for global output, trade, and the equity markets. They gave us this view of world trade: Now they have an update at VoxEU . The charts today show continued progress, but still the outlook is not clearly positive: Eichengreen and O'Rourke write: What is well known is that while global trade fell even faster in the recent crisis than during the Great Depression, it also recovered more quickly. But trade is now also fluctuating without direction, at levels barely higher than those of April 2008. Read A tale of two depressions redux here .
  • Can US Banking Policy Provide Lessons for Europe's Banks?

    At VoxEU , Mathias Hoffmann , of the University of Zurich, and Iryna Stewen , of the University of Mainz, argue that moves to separate banks along national lines could have the opposite effect of that desired by policy-makers. That is, Hoffman and Stewen argue for more integration, not less. They use a simple graph to illustrate the relationship between bank liberalization and uninsured risk. The blue line represents banks that had not been liberalized at the time of the recession. The red line represents banks that had been liberalized. Hoffman and Stewen: Interestingly, the co-movement between interstate risk-sharing and the US-wide business cycle started to weaken during the 1980s, which is the period during which banking liberalisation at the state level got into full swing (in fact, the correlation between the blue line and the red, dashed line in Figure 1 is -0.44 before 1984 and only -0.13 thereafter). We show that it is indeed the liberalisation of state bank branching restrictions that is responsible for this weakening. The role of banking liberalisation for risk-sharing is illustrated in Figure 2, which presents the extent of interstate risk-sharing that a state typically achieves in the years around a typical NBER business cycle trough. In Figure 2, we distinguish between two groups of states: Those that had already liberalised in a given recession (red dashed) and those that had not yet liberalised (blue solid line). The message is clear – for the states that had not liberalised, consumption risk–sharing with other states drops sharply (the fraction of unshared risk goes up in the picture) in a recession, only to recover to 'normal' levels a year after. For the states that have already liberalised during the recession, the extent of risk-sharing with the US as a whole remains stable. In the paper, we then also show that these improvements in risk-sharing overall are actually driven by better access to credit markets (and not some other channel of smoothing or risk-sharing). We believe that these results point towards an important benefit from banking liberalisation: Financial integration facilitates access to finance mainly when it is most urgently needed – during aggregate downturns. Read Recessions and small business access to credit: Lessons for Europe from interstate banking deregulation in the US here .
  • Public Debt Data, 1880-2008

    IMF researchers S. M. Ali Abbas , Nazim Belhocine , Asmaa El-Ganainy , and Mark Horton are trying to make the task of studying debt cycles and debt sustainability easier. They have begun building a database of historical public debt. At VoxEU , they have posted a series of interesting graphs from the data they have compiled so far. Including this one, that they say provides an "historical perspective of debt developments in advanced, emerging, and low-income economies. Debt levels in advanced economies (now the G20) averaged 55% of GDP over 1880–2009, with a number of peaks and troughs that correspond with key historical events along the way.": Here is what the authors say about the value of this data moving forward: The composition of the 11 debt reductions observed during 1880–1914, the first era of financial globalisation, is quite similar to that witnessed in the post-1970 financially liberalised period. In both cases, the debt ratio reductions were mainly caused by large primary surpluses. In fact, the post-1970s debt reductions are accounted for almost entirely by primary surplus improvements. However, insofar as such improvements are boosted by the cycle and easier to implement in the context of strong growth, these results may somewhat understate the true role of growth in debt declines; strong growth was a consistent feature of most debt decline episodes.2 That conventional fiscal adjustment and growth have led the way in periods of global financial integration is intuitive as well as consistent with previous studies (such as IMF 2010). Looking ahead, highly indebted advanced economies are confronted by a challenging landscape. The pursuit of unconventional options – such as reverting to financial repression policies akin to those taken during the post-WWII years, reducing the burden of domestic debt through higher inflation, or restructuring – may be a temptingshortcut but it comes with high costs. A gradual but steady adjustment is the right way to go. History shows an orderly adjustment is much easier in the context of sustained medium-term growth. This suggests that there is a premium on both implementing structural measures that improve competitiveness and the business environment, and designing fiscal adjustment in a manner that minimises the drag on growth. Read Lessons from a century of large public debt reductions and build-ups here .