Not all GDP measurement errors are greater than zero!

Bryan Caplan is an optimist. He thinks that economists do many errors in estimating GDP (overall well-being). He is right in the sense that we are missing many dimensions of welfare improvements in the last half-century (see here, here and here). These errors in measurements lead us to hold incorrectly pessimistic views (such as those of Robert Gordon). However, Prof. Caplan seems to argue (I may be wrong) that all measurements problems and errors are greater than zero. In other words, they all cut in favor of omitting things. There are no reasons to believe this. Many measurement problems with GDP  data cut the other way – in favor of adding too much (so that the true figures are lower than the reported ones).

Here are two errors of importance (which are in no way exhaustive): household output and adjustments for household size.

Household Output

From the 1910s to the 1940s, married women began to enter moderately the workforce. This trickle became a deluge thereafter. National GDP statistics are really good at capturing the extra output they were hired to produce. However, national GDP statistics cannot net out the production that was foregone: household output.

A married woman in 1940 did produce something: child-rearing, house chores, cooking, allowing the husband to specialize in his work. That output had a value. Once offered the chance to work, married women thought the utility generated from producing “home outputs” was inferior to the utility generated from “market work”. However, the output that is measured is only related to market work. Women entered the labor force and everything they produced was considered a net addition to GDP. In reality, any economist worth his salt is aware that the true improvement in well-being is equal to the increased market output minus the forsaken house output. Thus, in a transition from a “male-labor force” to a “mixed labor force”, you are bound to overestimate output increases.

How big of an issue is this? Well, consider this paper from 1996 in Feminist Economics. In that paper, Barnet Wagman and Nancy Folbre calculate output in both the “household” and “market” sectors. They find that even very small changes in the relative size of these sectors alter growth rates by substantial margins. Another example, which I discussed in this blog post based on articles in the Review of Income and Wealth, is that when you make the adjustment over four decades of available Canadian data, you can find that one quarter of the increase in living standards is eliminated by the proper netting out of the value of non-market output. These are sizable measurement errors that cut in the opposite direction as the one hypothesized by prof. Caplan (and in favor of people like prof. Gordon).

Household Size

Changes in household sizes also create overestimation problems. Larger households have more economies of scale to exploit than smaller households so that an income of $10,000 per capita in a household of six members is superior in purchasing power than an income of $10,000 per capita in a single-person household. If, over time, you move from large households to small households, you will overestimate economic growth. In an article in the Scottish Journal of Political Economy, I showed that making adjustments for household sizes over time yields important changes in growth rates between 1890 and 2000. Notice, in the table below, that GDP per adult equivalent (i.e. GDP per capita adjusted for household size) is massively different than GDP per capita. Indeed, the adjusted growth rates are reduced by close to two-fifths of their original values over the 1945-2000 period and by a third over the 1890 to 2000 period. This is a massive overestimation of actual improvements in well-being.

HouseholdAdjust

A large overestimation

If you assemble these two factors together, I hazard a guess that growth rates would be roughly halved (there is some overlap between the two so that we cannot simply sum them up as errors to correct for – hence my “guess”). This is not negligible. True, there are things that we are not counting as Prof. Caplan notes. We ought to find a way to account for them. However, if they simply wash out the overestimation, the sum of errors may equal zero. If so, those who are pessimistic about the future (and recent past) of economic growth have a pretty sound case. Thus, I find myself unable to share Prof. Caplan’s optimism.

It’s no longer the economy, but we are still stupid

Motivated Reasoning, Public Opinion, and Presidential Approval‘, an interesting new paper forthcoming in the journal Political Behavior (summarized here), by Kathleen M. Donovan, Paul M. Kellstedt, Ellen M. Key, Matthew J. Lebo finds that support for sitting presidents has become increasingly misaligned with national economic expectations. Rather than being a sign of voters realizing that presidents play little role determining economic performance, they attribute this to increased partisan polarization.

I think this is a compelling account. All I would add is a potential causal mechanism. My current favorite dimensions for analyzing democratic trends in the developed world is demography. Voters are ageing. When retired, they tend to have much less direct involvement with the productive economy than when they were working. On average, the elderly are quite rich and living off entitlements they have acquired during their working lives. So they are both less reliant on current economic opportunities and less knowledgeable of them. This means their personal costs of partisanship, relative to good policy, is lower than it used to be. And this is what lets all the culture-war nonsense creep into people’s decision functions.

The nature of the China-US-Vietnam economic triangle

While addressing a joint press conference in Hanoi, after his summit with North Korean Leader Kim Jong Un, US President Donald Trump spoke not just about the Summit, but also the current state of US-China relations. Trump criticised his predecessors for not doing enough to address the trade imbalance with China, while also making the point that he was all for China’s economic progress and growth, but not at the cost of the US.

If one were to look beyond the Summit in terms of the US-Vietnam economic relations, top US companies – Boeing and General Electric – sealed some important deals.

Given the focus of Trump’s visit (which was the Summit with Kim), perhaps these deals did not draw the attention they ought to have. The fact is that the US has begun to recognise Vietnam’s economic potential, as well as its geopolitical significance in Asia. This long note will give a backgrounder to Vietnam’s economic growth story in recent years, highlight some of it’s key strategic relationships, and then examine the nature of the China-US-Vietnam economic triangle.

Vietnam’s growth story: The key reasons Continue reading

Nightcap

  1. The St. Valentine’s Day massacre Evan Bleier, RealClearLife
  2. The Sons of Mars and the ancient Mediterranean Erich Anderson, History Today
  3. The two trilemmas today Branko Milanovic, globalinequality
  4. How the United States reinvented empire Patrick Iber, New Republic

Forging ahead, falling behind and fighting back: British economic growth from the industrial revolution to the financial crisis

Nick Crafts can be viewed as the doyen of British economic history. His major publications date back to the 1970s – a favorite of mine is this piece from 1977 on the role played by chance in determining whether the Industrial Revolution would occur in England or France.  He is also the joint author of the Crafts-Harley interpretation of the Industrial Revolution.  But, perhaps because the majority of his research focuses on British economic history, he remains highly underrated outside of the UK.  His new book Forging ahead, falling behind and fighting back: British economic growth from the industrial revolution to the financial crisis summarizes much of his research.

I’ve reviewed it for the Economic History Review. But given the whims of academic publishing, it may be a long time until my review appears in print so I’ve decided to post a preview of my draft below.

**************************

Why was Britain the first industrial nation and the workshop of the world? Why was it eventually caught up and overtaken? Why once it had fallen behind the United States, did it fall further behind its European rivals in the Post-War period? And how did it recover its relative position in the 1980s and 1990s? All these questions are addressed in Nicholas Crafts’s slim new book.

In Forging ahead, falling behind and fighting back, Crafts provides a macroeconomic perspective on the British economy from 1750 to today. The word macro is advisory. Crafts surveys the British economy from 1000 feet, through the lens of growth theory and growth accounting. The upside of this approach is that he delivers a lot of insight in a small number of pages. Readers looking for discussions of individual inventors, innovations, politicians, or discussion of specific policy decisions can look elsewhere.

The first part of the book provides an overview of the Crafts-Harley view of the British Industrial Revolution. This view emphasizes the limited scope of economic change in the early 19th century. On the eve of the Industrial Revolution, the British economy already had a comparatively modern structure, with many individuals working outside agriculture. Growth between 1770 and 1850 was highly reliant on a few key sectors and TFP growth was modest (0.4% a year). Most workers remained employed in traditional sectors of the economy. It took until the second half of the 19th century for the benefits of steam, the general purpose technology of the age, to fully diffuse through the economy. Nonetheless, from a long-run perspective, the achievements of this period, a small but sustained increases in per capita GDP despite rapid population growth, were indeed revolutionary.

An important theme of the book is institutional path dependency. Characteristics of Britain’s early position as an industrial leader continued to shape its political economy down to the end of the 20th century. Crafts mentions two interesting instances of this. First, Britain’s precocious reliance on food imports from the early 19th century onwards left a legacy that was favorable of free trade. Elsewhere in the world democratization in the late 19th century often led to protectionism, but in Britain, it solidified support for free trade because, after the expansion of the franchise, the median voter was an urban worker dependent on cheap imported bread. Second, industrial relationships were shaped the nature of the economy in the 19th century. Britain thus inherited a strong tradition of craft unions that would have consequences in conflicts between labor and capital in the 20th century.

The second part of the book considers the late Victorian, Edwardian, and inter-war periods. It was in the late 19th century that the United States overtook Britain. A venerable scholarship has identified this period as one of economic failure. Crafts, however, largely follows McCloskey in exonerating Edwardian Britain from the charge of economic failure. The presence of fierce competition limited managerial inefficiencies in most areas of the economy; though there were notable failures in sectors where competition was limited such as the railways. The main policies errors in this area were thus ones of omission rather than commission: more could have been done to invest in R&D and support basic science – an area where the US certainly invested in more than the UK.

The seeds of failure, for Crafts, were sown in the interwar period. Traditionally these years have been viewed relatively favorably by economic historians, as the 1930s saw a shift away from Industrial Revolution patterns of economic activity and investment in new sectors. However, in a comparative light, TFP growth in the interwar period was significantly slower than in the US. The new industries did not establish a strong export position. This period also saw the establishment of a managed economy, in which policymakers acceded to a marked decline in market competition. Protectionism and cartelization kept profits high but at a cost of long-run productivity growth that would only be fully revealed in the post-war period.

Most economic historians view the postwar period through the lens of Les Trente Glorieuses. But in Britain, it has long been recognized that this was an era of missed opportunities. Simple growth accounting suggests that Britain underperformed relative to its European peers. Thus though the British economy grew faster in these years than in any other period; it is in this period that Britain’s relative failure should be located.

Crafts examines this failure using insights from the literature on “varieties of capitalism” which contrasts coordinated market economies like West Germany with liberal market economies like the United States or Britain. In the favorable conditions of postwar recovery and growth, coordinated market economies saw labor cooperate with capital enabling both high investment and wage restraint. Britain, however, lacked the corporatist trade unions of France or West Germany. As a legacy of the Industrial Revolution, it inherited a diverse set of overlapping craft unions which could not internalize the benefits of wage restraint and often opposed new technologies or managerial techniques. Britain functioned as a dysfunctional liberal market economy, one that became increasingly sclerotic as the 1960s passed into the 1970s.

An important insight I got from this book is that government failure and market failure are not independent.  Examples of government failure from the postwar period are plentiful. Industrial policy was meant to “pick winners.” But “it was losers like Ross Royce, British Leyland ad Alfred Herbert who picked Minsters” (p. 91). Market power became increasingly concentrated. Approximately 1/3 of the British economy in the 1950s was cartelized and 3/4 saw some level of price fixing. Britain’s exclusion from the EEC until the 1970s meant that protective barriers were high, enabling inefficient firms and managerial practices to survive. High marginal rates of taxation and weak corporate governance encouraged managers to take their salary in the form of in-kind benefits, and deterred innovation. Labor relations became increasingly hostile as the external economic environment worsened following the end of Bretton Woods.

Britain recovered its relative economic position after 1979 through radical economic reforms and a dramatic shift in policy objectives. Though of course, the Thatcher period saw numerous missteps and policy blunders, what Crafts argues was most important was that there was an increase in product market competition, a reduction in market distortions, and a reduction of trade union power, factors provided the space that enabled the British economy to benefit from the ICT revolution in the 1990s.

Rarely does one wish a book to be longer. But this is the case with Forging Ahead, Falling Behind, and Fighting Back. In particular, while a short and sharp overview of the Industrial Revolution is entirely appropriate, given the number of pages written on this topic in recent years, the last part of the book does need extra pages; the argument here is too brief and requires more evidence and substantive argumentation. One wishes, for instance, that the theme of institutional path dependency was developed in more detail. Despite this, Forging Ahead, Falling Behind, and Fighting Back is a notable achievement. It provides a masterly survey of British economy history tied together by insights from economic theory.

Eye Candy: The HDI of BRICS

Phew, that’s a lot of acronyms. But this is a great map:

NOL map BRICS subunits
Click here to zoom

Orange and yellow is bad, green and blue is good. HDI stands for “Human Development Index,” which is a measurement that’s not nearly as good, in my opinion, for understanding how wealthy and happy a population is. Nevertheless, HDI is still one of the better measurements (Top 5, again in my opinion) out there. Here’s the wiki on HDI.

The maps are colored according to “subunits,” or provinces (which are like American states, such as Nebraska).

Brazil, India, and South Africa are multi-party democracies, while the other two are not. So what do all five have in common?

Legal Immigration Into the United States: The H-1B Visas Confusion and Controversy (Part 2 of 6)

This is the right place for a painful digression. It’s painful because it’s about a program related to immigration that is both confusing and calculated, as if by design, to become controversial. Yet, as I argue below, toward the end of this essay, it’s a program with promise.

Many middle-class foreigners with college degrees are in the US on temporary working visas. By numbers, the main category of working visas is the H-1B visa. (This is confusing, but there is currently no such thing as an H-1A visa.) Holders of the H-1B visa must meet specific educational qualifications. They are sponsored by American employers – but also by employers who look much like labor contractors based abroad. They may stay in the US for a period of three years, renewable for an additional three years. That’s except if they work for a university or for a research institute, in which case their visa is pretty much eternal. Although the number of visas allotted each year is capped, by accumulation, the program involves significant numbers of people, about 350,000 in 2016. Some or most H-1B visas are allocated by lottery on an annual basis. (It’s completely separate from the diversity lottery described above [in Part 1], as I said.)

The rationale behind the H-1B visa is to supply workers in specialties that industrial and other organizations cannot find domestically. The program is controversial for two reasons. Continue reading