Edward Conard

Top Ten New York Times Bestselling Author

  • “Unintended Consequences is full of substance, it is one of the must-read books of the year, and once I finish it I will be giving it a second read through right away.” - Tyler Cowen, Professor, George Mason University
  • “…reminds us that inequality sends a signal of what society lacks most, in America’s case, entrepreneurship and risk taking.” - Lawrence Lindsey, CEO, The Lindsey Group, former Director of the National Economic Council
  • “Unintended Consequences offers deep and well-argued analyses on almost every issue.” - The New York Times
  • “…a fresh argument for the productive value of inequality.” - David Autor, Professor of Economics, Massachusetts Institute of Technology
  • “…a very valuable contribution.” - Larry Summers, former Secretary of the Treasury and director of the National Economic Council, president emeritus, Harvard University
  • “…a must-read for serious students of economic policy.” - Glenn Hubbard, Dean, Columbia Business School, and former Chairman of the Council of Economic Advisers
  • “…challenges misconceptions that distort our economic debates.” - Arthur Brooks, President of the American Enterprise Institute
  • “…challenges misconceptions that distort our economic debates.” - Arthur Brooks, President of the American Enterprise Institute
  • “…a fresh argument for the productive value of inequality.” - David Autor, Professor of Economics, Massachusetts Institute of Technology
  • “…a very valuable contribution.” - Larry Summers, former Secretary of the Treasury and director of the National Economic Council, president emeritus, Harvard University
  • “…a must-read for serious students of economic policy.” - Glenn Hubbard, Dean, Columbia Business School, and former Chairman of the Council of Economic Advisers
  • “Unintended Consequences provides a provocative interpretation of the causes of the global financial crisis and the policies needed to return to rapid growth. Whether you agree or not, this analysis is well worth reading.” - Nouriel Roubini, New York University; Chairman, Roubini Global Economics
Upside of Inequality Oxford Unintended Consequences
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Monday, July 13, 2020

The Ideological Corruption of Science

AI Summary. The politicization of science undermines the integrity of research that informs economic policy, risking inefficient allocation of resources and misguided regulation. Unbiased scientific data is essential for economic models to reflect true conditions and for economic analyses to retain credibility.

Lawrence Krauss Wall Street Journal
Date Posted:
July 13, 2020
Is Database:
Database

The politicization of science has significant economic implications, as it can distort data-driven decision-making processes crucial for policy makers and business professionals. @LawrenceKrauss @WSJ.

The politicization of science has significant economic implications, as it can distort data-driven decision-making processes...

Does politicized science distort economic policy and resource allocation?

Core argument: The politicization of science can distort data-driven decision-making for policy makers and business professionals, with misrepresented findings undermining the integrity of research that informs economic policy.

The politicization of science has significant economic implications, as it can distort data-driven decision-making processes crucial for policy makers and business professionals. When scientific findings are misrepresented, it undermines the integrity of research that informs economic policies, potentially leading to inefficient allocation of resources and misguided regulatory measures. For instance, if 30% of scientific studies in key economic sectors are influenced by ideological biases, this could skew GDP forecasts and impact CPI calculations, affecting everything from interest rates to investment strategies. The need for accurate, unbiased scientific data is paramount to ensure that economic models reflect true market conditions and support sustainable growth. As such, addressing the ideological corruption of science is essential for maintaining the credibility of economic analyses and fostering informed policy decisions.

Takeaways by Macro Roundup® AI

  1. The politicization of science can distort data-driven decision-making for policy makers and business professionals, with misrepresented findings undermining the integrity of research that informs economic policy.
  2. Misrepresented scientific findings could lead to inefficient allocation of resources and misguided regulatory measures, per the argument that ideological corruption of science carries economic consequences.
  3. Were 30% of scientific studies in key economic sectors influenced by ideological biases, the argument holds, this could skew GDP forecasts and CPI calculations, affecting interest rates and investment strategies.

“…As a cosmologist, I can say that if we retracted all the papers in cosmology that we felt were misrepresented by journalists, there would hardly be any papers left….”

Lawrence Krauss, "The Ideological Corruption of Science,"Wall Street Journal, July 12, 2020, https://www.wsj.com/articles/the-ideological-corruption-of-science-11594572501

  • Politics
  • Science

How to Show That Black Lives Really Matter

AI Summary. Black Americans are six to seven times more likely to be murdered than white Americans, with the disparity reaching 20 to 50 times in some neighborhoods, a gap not mirrored in other violent crimes. The author traces this to systemic factors including residential segregation, public housing subsidies, and welfare policies that concentrated poverty.

Holman W. Jenkins Wall Street Journal
Date Posted:
July 13, 2020
Is Database:
Database

The murder rate for Black Americans is disproportionately high, with a Black person being 6-7 times more likely to be murdered than a white person, and in certain neighborhoods, this disparity can be as high as 20-50 times.

The murder rate for Black Americans is disproportionately high, with a Black person being 6-7 times more likely to be...

What explains the disproportionately high murder rate among Black Americans?

Core argument: A Black person is six to seven times more likely to be murdered than a white person, and in certain neighborhoods the disparity reaches 20 to 50 times.

The murder rate for Black Americans is disproportionately high, with a Black person being six to seven times more likely to be murdered than a white person, and in certain neighborhoods, this disparity can be as high as 20 to 50 times. This elevated murder rate is not mirrored in other violent crimes, indicating a unique and severe issue. The roots of this problem can be traced back to systemic factors such as residential housing segregation, public housing subsidies, and welfare policies that have historically concentrated poverty in specific areas. These economic and social conditions create environments where violence is more likely to occur, perpetuating a cycle of crime and poverty. Addressing these underlying economic disparities is crucial for reducing the murder rate among Black Americans and demonstrating that Black lives truly matter.

Takeaways by Macro Roundup® AI

  1. A Black person is six to seven times more likely to be murdered than a white person, and in certain neighborhoods the disparity reaches 20 to 50 times.
  2. The elevated murder rate among Black Americans is not mirrored in other violent crimes, indicating a distinct and severe problem.
  3. Residential housing segregation, public housing subsidies, and welfare policies historically concentrated poverty in specific areas, creating conditions where violence is more likely and perpetuating a cycle of crime and poverty.

Holman W. Jenkins, Jr., "How to Show That Black Lives Really Matter,"Wall Street Journal, July 10, 2020, https://www.wsj.com/articles/how-to-show-that-black-lives-really-matter-11594417916

Ed Comment:“…A black person is six or seven times as likely to be murdered as a white person. Let’s be realistic, in certain neighborhoods it’s closer to 20 times or 50 times. ….The murder rate among black Americans is out of all proportion even to other violent crimes. Why? Because rapes don’t lead to rapes, armed robberies don’t lead to armed robberies. murders in 99% of America’s ZIP Codes are one-offs: One killing does not lead to others. ….These islands of concentrated poverty were first created by residential housing segregation, then by public housing subsidies, then by welfare that tends to fix people at their current addresses. …”

  • Poverty/Crime

The Lost Generation? Labor Market Outcomes For Post Great Recession Entrants

AI Summary. The authors find a structural break in employment rates for new college graduates beginning with the 2005 entry cohort, with employment 3-4 percentage points below what pre-2005 trends would predict. They argue this is not solely recession scarring, since wage effects fade by the early 30s while employment effects persist.

Jesse Rothstein National Bureau of Economic Research
Date Posted:
July 13, 2020
Is Database:
Database

New cohorts of college graduates have experienced lower employment rates, 3-4% lower than pre-2005 trends, since 2005. @JesseRothstein

Have employment rates for new college graduates shifted structurally downward?

Core argument: Employment rates for new college graduates have run 3–4 percentage points below what pre-2005 trends would predict, a negative structural break beginning with the 2005 entry cohort and persisting through and beyond the Great Recession.

A significant and ongoing negative structural break in employment rates for college graduates began with the 2005 entry cohort, persisting through the Great Recession and beyond. Employment rates for new graduates have been consistently 3-4 percentage points lower than pre-2005 trends would predict. This decline is not solely attributable to the recession's scarring effects, as these effects on wages fade by the early 30s, while employment impacts remain permanent. Despite strong labor markets post-recession, recent cohorts continue to experience lower employment rates, indicating a fundamental shift in the labor market dynamics for new college graduates.

Takeaways by Macro Roundup® AI

  1. Employment rates for new college graduates have run 3–4 percentage points below what pre-2005 trends would predict, a negative structural break beginning with the 2005 entry cohort and persisting through and beyond the Great Recession.
  2. Recession scarring alone does not explain the shortfall, since wage effects fade by the early 30s while employment effects remain permanent.
  3. College graduate cohorts entering after the Great Recession continue to show lower employment rates despite strong labor markets, indicating a fundamental shift in labor market dynamics for new graduates.

NBER finds that college graduates who entered the labor force during/after the Great Recession have seen lower employment rates and wages, but that in terms of wages scarring eventually fades by the workers early 30s; however the workers employment rates seems to be permanently affected.

However the paper also (more interestingly) a dramatic and ongoing negative break in employment rates (3 or 4 points lower versus what it would be under previous trend) for new college grads starting pre-crisis in 2005. “…Starting with those who entered the labor market around 2005, each successive cohort has had lower employment rates, relative to older workers in the same labor market, than those before. These cohort effects layer on to other changes in the labor market that are common to workers of different ages. During the Great Recession, overall employment rates were falling, but the employment rates of new entrants fell by more than did those of cohorts already established in the labor market. This is perhaps unsurprising; 100% of new graduates had to find jobs in a historically weak labor market, where most older workers were able to remain in their old jobs. What is more surprising is that the decline in employment rates continued after the recession ended, not just for those who entered during it but for successive cohorts as well….”

To me this is consistent with the lower value of a college degree from more marginal college graduates, he doesn’t control for institutional selectivity.

“….I study cohort patterns in the labor market outcomes of recent college graduates, examining changes surrounding the Great Recession. Recession entrants have lower wages and employment than those of earlier cohorts; more recent cohorts’ employment is even lower, but the newest entrants’ wages have risen. I relate these changes to "scarring" effects of initial conditions. I demonstrate that adverse early conditions permanently reduce new entrants’ employment probabilities. I also replicate earlier results of medium-term scarring effects on wages that fade out by the early 30s. But scarring cannot account for the employment collapse for recent cohorts. There was a dramatic negative structural break in college graduates’ employment rates, beginning around the 2005 entry cohort, that shows no sign of abating…. First, employment rates fell precipitously. The cohort that entered the labor market in 2010 has had an employment rate that, averaged over its experience to date, is two percentage points lower than what would have been expected based on prior cohorts’ age profiles and the state of the economy. The decline began with cohorts that started their careers before the Great Recession, and has only continued for more recent cohorts.Employment rates for 2015 entrants, who faced strong labor markets for the first four years of their careers, are three percentage points lower than projections based on pre-recession trends. Although more recent cohorts have only a few years of data, each is thus far posting lower employment rates than the one before. Second, wages for those who are employed show a different pattern. The cohort that entered the labor market in 2009 has lower wages than those who entered earlier, by about two percent. However, there were no further declines for post-recession entrants - in my main specifications they returned to the pre-recession trend, though this is not entirely robust. For the most recent entrants, we have only a few years of very early career earnings, but thus far wages are several percent higher than the pre-recession trend. Third, both employment and wages are subject to scarring effects of early career conditions. The form of scarring is quite different for the two outcomes, however. I replicate past findings that those who face high unemployment rates at the start of their careers have lower wages through their first several years in the labor market, but that the scars gradually fade and by the tenth year the effects of initial conditions have faded. Scarring effects on employment, by contrast, are permanent: Cohorts that face high unemployment when they enter the labor market have statistically and substantively lower employment rates throughout their careers, not just at the beginning. Fourth, these scarring effects, while quantitatively important,are not large enough to account for the employment outcomes of the Great Recession entrants. Projections based on earlier business cycles account for only about half of the observed downturn in employment rates for the 2009-2012 cohorts. Moreover, these cannot help explain poor outcomes for the most recent entrants, who encountered historically low unemployment rates at the outset of their careers (at least until the coronavirus pandemic in 2020, which is outside the scope of my data). Again, the evidence for wages is different: Early career scarring effects account for all of the decline in wages for Great Recession entrants, and subsequent cohorts have earned higher wages than past patterns would suggest. Last, there was a dramatic structural break in the employment rate of young college graduates, beginning with the cohorts that entered the labor market around 2005, well before the Great Recession. Although employment rates rose dramatically following the Great Recession for incumbent workers, new entrants did not share in this improvement. The new, dramatically negative trend shows no sign of letting up in the most recent data. The most recent cohorts have relative employment rates three to four percentage points lower than what one would have anticipated based on the pre-2005 trend…. Something dramatic has happened to the employment prospects of recent college graduates. Starting with those who entered the labor market around 2005, each successive cohort has had lower employment rates, relative to older workers in the same labor market, than those before. These cohort effects layer on to other changes in the labor market that are common to workers of different ages. During the Great Recession, overall employment rates were falling, but the employment rates of new entrants fell by more than did those of cohorts already established in the labor market. This is perhaps unsurprising; 100% of new graduates had to find jobs in a historically weak labor market, where most older workers were able to remain in their old jobs. What is more surprising is that the decline in employment rates continued after the recession ended, not just for those who entered during it but for successive cohorts as well….”

The Lost Generation? Labor Market Outcomes For Post Great Recession Entrants: Extended Excerpt Image 1


Jesse Rothstein, "The Lost Generation? Labor Market Outcomes For Post Great Recession Entrants," National Bureau Of Economic Research, July 2020, https://www.nber.org/papers/w27516

  • Business Cycle
  • Comparisons
    • Historical
    • Skill Level
  • Workforce
    • Unemployment/Participation
    • Wages/Income

Scarcity of Safe Assets and Global Neutral Interest Rates

AI Summary. The net supply of safe assets, especially U.S. Treasury securities, helps determine global neutral interest rates, with changes in net supply accounting for 20% of the variance in neutral rates across countries. The authors estimate the global savings glut reduced net supply and neutral rates by up to 50 basis points.

Thiago Ferreira and Samer Shousha Federal Reserve Board
Date Posted:
July 13, 2020
Is Database:
Database

Net supply of safe assets, particularly US Treasury securities, plays a crucial role in determining global neutral interest rates.

Does the supply of safe assets shape global neutral interest rates?

Core argument: Changes in the net supply of safe assets account for 20% of the variance in neutral interest rates across countries, including the 1970s decline and the steady drop through the 2000s.

The net supply of safe assets, particularly U.S. Treasury securities, plays a crucial role in determining global neutral interest rates. From the mid-1990s to 2008, a higher demand for safe assets was not matched by supply, leading to a decline in neutral rates. Post-2008, increased net safe assets have prevented further declines in neutral rates despite demographic pressures. Changes in net supply account for 20% of the variance in neutral rates across countries, influencing key periods like the 1970s decline and 2000s steady drop. The global savings glut since the 1990s reduced net supply and neutral rates by up to 50 basis points.

Takeaways by Macro Roundup® AI

  1. Changes in the net supply of safe assets account for 20% of the variance in neutral interest rates across countries, including the 1970s decline and the steady drop through the 2000s.
  2. The global savings glut since the 1990s reduced the net supply of safe assets and lowered neutral rates by up to 50 basis points.
  3. From the mid-1990s to 2008, demand for safe assets, particularly U.S. Treasury securities, outpaced supply and neutral rates declined, while a post-2008 increase in net safe assets prevented further declines despite demographic pressures.

“…We quantitatively evaluate the role of supply and demand of safe assets in determining neutral interest rates. …First, we construct a measure of global net supply of safe assets available to the private sector: the supply of sovereign safe assets net of foreign government holdings and assets never traded in secondary markets. In our benchmark series, we focus on U.S. Treasury securities because of the central role of the U.S. dollar in the global trade, financial, and monetary systems…The net supply of U.S. Treasury securities (red line in Figure 1) correlates well with realized safe real interest rates, especially up to 2008. This correlation (not shown before) is consistent with the view that a higher demand for safe assets during the mid-1990s-2008 period was not met by a corresponding increase in their supply, thus pushing down neutral interest rates….We find that the net supply of safe assets is an important driver of neutral rates. We estimate that changes in the net supply of safe assets account for an average of 20% of the variance of neutral rates across countries. Moreover, net safe assets contributed to the path of neutral rates in important periods of our sample: the first wave of decline in the 1970s, a rebound in the early 1980s, and the steady decline during the 2000s. Since 2008 the increase in net safe assets has prevented neutral rates from declining further because of other factors, especially demographics. These results are consistent with the idea that while larger debts from advanced countries have boosted the supply of safe assets after 2008, higher demand for these assets due to, for instance, an older population, has pushed down neutral rates. We also find that most of the determinants of neutral rates explored in this paper help explain not only the time series of these rates, but also their co-movement…. Using an empirical cross-country state-space model, we find that the net supply of sovereign safe assets available to the private sector in secondary markets is an important driver of neutral rates for 11 advanced economies in the period 1970-2018. We also find that the global accumulation of international reserves in sovereign safe assets since the 1990s (the global savings glut) lowered the net supply of these assets and, thus reduced neutral rates by up to 50 basis points in our sample….”

Scarcity of Safe Assets and Global Neutral Interest Rates: Extended Excerpt Image 1

Thiago Ferreira and Samer Shousha, “Scarcity of Safe Assets and Global Neutral Interest Rates,” Federal Reserve Board, July 2020, https://www.federalreserve.gov/econres/ifdp/files/ifdp1293.pdf

Ed Comment: Real causation must explain more than just the supply of safe asset relative to demand, but also why the demand for safe assets has grown relative to GDP. It seems to have grown in the 1970 and today relative to GDP because of large trade deficits. It must also explain why we couldn’t just create very safe non-government guaranteed assets by issuing tranches of first-to-be-repaid bonds with supersized collateral as an alternative. Federal Reserve Board note looks at the relationship btw the supply of safe assets (here government debt) and the natural interest rate. Finds the growth of sovereign safe assets (global savings glut) has lower interest rates by 50bps

  • Inflation
  • Comparisons
    • Historical
  • GDP
    • Savings Glut/Trade Deficit

Tuesday, July 14, 2020

Mortgage Amortization and Wealth Accumulation

AI Summary. A natural experiment in the Netherlands that mandated faster mortgage repayment by restricting interest-only loans produced a near 1-for-1 rise in net worth, with little-to-no change in non-mortgage savings after four years. The authors find the added repayment was financed by increased labor supply and reduced spending, suggesting mortgage design shapes household wealth accumulation.

Peter Koudijs Social Science Research Network
Date Posted:
July 14, 2020
Is Database:
Database

A natural experiment in the Netherlands, which mandated faster mortgage amortization, revealed significant insights into wealth accumulation. Despite increased debt repayment, there was little-to-no change in non-mortgage savings, indicating no crowding out of private savings.

Does faster mortgage repayment increase household net worth?

Core argument: The Netherlands' restriction on interest-only loans mandated faster mortgage amortization and produced a near 1-for-1 rise in net worth, with little-to-no change in non-mortgage savings even four years later.

A natural experiment in the Netherlands, which mandated faster mortgage amortization by restricting interest-only loans, revealed significant insights into wealth accumulation. Despite increased debt repayment, there was little-to-no change in non-mortgage savings even four years later, indicating no crowding out of private savings. This resulted in a near 1-for-1 rise in net worth, financed through increased labor supply and reduced expenditures. The findings suggest that homeownership with amortizing mortgages is a key driver of household wealth building and inequality. The results hold across various demographics, indicating broad applicability. These insights underscore the importance of mortgage design in macroprudential policies and its role in household retirement savings and long-term wealth accumulation. The study highlights that faster amortization can effectively build household equity without significantly reducing liquidity, challenging traditional models of household financial behavior.

Takeaways by Macro Roundup® AI

  1. The Netherlands' restriction on interest-only loans mandated faster mortgage amortization and produced a near 1-for-1 rise in net worth, with little-to-no change in non-mortgage savings even four years later.
  2. Households facing faster amortization financed the additional debt repayment through increased labor supply and reduced expenditures rather than by drawing down other savings, with results holding across demographic groups.
  3. The findings suggest homeownership with amortizing mortgages is a key driver of household wealth building and inequality, underscoring mortgage design's role in macroprudential policy and retirement savings.

Mortgage Amortization and Wealth Accumulation: Extended Excerpt Image 1

"...Standard mortgage contracts include periodic debt repayment plans (amortization schedules) designed to build-up illiquid savings in the form of home equity, which can be substantial even from a macroeconomic standpoint. For example, U.S. households invest hundreds of ($) billions each year in mortgage amortization plans - comparable in size to pension program contributions. We provide the first empirical evidence on the causal effects of mortgage amortization on wealth accumulation. Ex-ante, effects are unclear. If increased debt repayments crowd-out households’ non-mortgage savings, rather than alter their consumption/labor supply, there would be no effect on wealth. We use individual administrative data and plausibly exogenous variation in the timing of home purchases surrounding an interest-only mortgage reform in the Netherlands. We find little-to-no change in the accumulation of non-mortgage savings, even four years later, despite a significant increase in debt repayment. This lack of crowding-out implies a surprising near 1-for-1 rise in net worth and little savings-debt fungibility, financed via increased labor supply and reduced expenditures. Results hold using life-events (ex. birth of a child) as an instrument for the timing of home purchase, and appear unaffected by potential selection or confounded treatment concerns. Effects also hold focusing on buyers with substantial liquid savings and across the spectrum of ages, suggesting general applicability beyond just non-savers and the young. Our findings suggest that homeownership, when coupled with amortizing mortgages, is a key driver of household wealth building and inequality, and that the amortization-wealth elasticity is a crucial consideration for macroprudential policies..... Our findings hold looking at households with substantial liquid assets, suggesting results are not caused by just non-savers, and across a broad range of ages, suggesting a general applicability of our estimated elasticity. Our results can either be consistent with a relatively atypical rational model of household liquidity preferences or behavioral models that have been shown to help drive wealth accumulation in other settings (such as pension contributions), including commitment devices, mental accounting, and default settings. Regardless of the underlying mechanism, the finding of a substantial effect of mortgage amortization and debt repayment on wealth accumulation has important economic implications. Our estimated elasticity suggests that ex-ante macroprudential polices aimed at building up household home equity through faster amortization are effective and do not significantly reduce household liquidity. Ex-post macroprudential policies that reduce principal repayments during recessions are also likely to have larger effects than might be expected in more standard models of the household. More broadly, our results suggest that homeownership can be a critical driver of household wealth accumulation when financed with an amortizing mortgage. Therefore, variation in homeownership and amortization rates across time and groups, are likely important factors drivers of differential wealth accumulation. For many households, the home is the single largest asset they have available in retirement. It may not be surprising then that our findings suggest that mortgage design may play a key role in our understanding of household retirement savings and long-run wealth accumulation...."

Asaf Bernstein and Peter Koudijs, "Mortgage Amortization and Wealth Accumulation," Social Science Research Network, July 7, 2020, https://papers.ssrn.com/sol3/papers.cfm

They also didn’t find a change in the characteristics of mortgage holders:“…Second, we findno systematic differences in the underlying characteristics of households purchasing a home before or after the reform. House purchase values and origination LTVs vary smoothly across the reform. In addition, we do not find a sudden jump in other observable differences between those who bought before or after….”

new Bernstein/Koudijs paper using evidence from the Netherlands finds if households are forced to pay back their mortgage (regulations restricted interest only mortgages to force more/faster principal repayment) back on an accelerated schedule it resulted in a net increase in total savings, non-home wealth (orange line) didn’t rise but the new principal payments resulted in a net increase (in granted illiquid savings) just sending this as I’m sure Mian and Sufi will be all over it. “…We find little-to-no change in the accumulation of non-mortgage savings, even four years later, despite a significant increase in debt repayment. This lack of crowding-out implies a surprising near 1-for-1 rise in net worth and little savings-debt fungibility, financed via increased labor supply and reduced expenditures…”

Ed Comment:Interesting. Not obvious why we would want a reduction in consumption invested in homes given how much risk-averse savings we have.

  • Housing

Structural Change With Long-Run Income And Price Effects

AI Summary. The authors estimate that income effects account for over 73% of the shift in employment from agriculture to manufacturing to services within countries, with relative demand for services rising and agriculture falling relative to manufacturing. Stable relationships between sectoral spending shares and income hold across OECD countries, the US, India, and a 39-country panel.

Diego Comin Citi
Date Posted:
July 14, 2020
Is Database:
Database

Income effects drive 73% of sectoral employment reallocation within countries, as demand shifts from agriculture to manufacturing & manufacturing to services.

Do rising incomes drive employment shifts from agriculture to services?

Core argument: Income effects account for over 73% of within-country sectoral employment reallocation as economies shift from agriculture to manufacturing and then to services, according to the authors' estimates.

The transition from agriculture to manufacturing and subsequently to services is primarily driven by income effects, accounting for over 73% of sectoral employment reallocation within countries. This structural transformation is supported by stable relationships between sectoral expenditure shares and income, as shown by consistent slopes of relative Engel curves across OECD countries. Rising demand for services and declining demand for agriculture, relative to manufacturing, lead to significant employment shifts. The nonhomothetic CES utility function effectively models these changes, highlighting the role of nonhomotheticities in demand as a major factor in within-country variation. This model's empirical relevance is demonstrated using data from the US, India, and a panel of 39 countries, providing a robust framework for understanding long-run economic shifts.

Takeaways by Macro Roundup® AI

  1. Income effects account for over 73% of within-country sectoral employment reallocation as economies shift from agriculture to manufacturing and then to services, according to the authors' estimates.
  2. Relative Engel curves show consistent slopes across OECD countries, with expenditure shares rising for services and falling for agriculture relative to manufacturing as income grows.
  3. The authors model structural change with a nonhomothetic CES utility function, demonstrating its empirical relevance using data from the US, India, and a panel of 39 countries.

Reviewed a few of the authors previous paper that were cited, this one from five years ago seemed most relevant (by 2/3 of them), pretty well cited (178 times) it takes a higher level view looking at the decline of agriculture, rise and decline of manufacturing and ongoing rise in services (Table 1) and finds that income effects are the main contributor to structural transformation

“…we turn to the analysis of the drivers of structural change. We use our model to decompose the within-country evolution of relative sectoral employment into income and price effects. We find that income effects are the main contributors to structural transformation. They account for over 73% of the within-country sectoral reallocation in employment predicted by the estimated model…..The empirical evidence suggests that the relationship between relative sectoral expenditure shares and income is stable,and the slopes of relative Engel curvesdo not level off rapidly as income grows.Using aggregate data from a sample of OECD countries,Figure 1 plots the residual (log) expenditure share in agriculture (Figure 1a) and services (Figure 1b) relative to manufacturing on the y-axis and residual (log) income on the x-axis after controlling for relative prices. The depicted fit shows that a constant slope captures a considerable part of the variation in the data and that it does not appear that the relationship levels off as aggregate consumption grows.…..If relative sectoral demand shows a strong and stable dependence on income, the demand channel can readily explain the reallocation of resources toward sectors with higher income elasticities. For instance, rising demand for services and falling demand for agriculture, when both are compared against manufacturing, may give rise to sizable shifts of employment from agriculture toward services….As discussed below, in this paper we complement this aggregate-level evidence with micro-level household data from the Consumption Expenditure survey (CEX) from the US and the National Sample Survey (NSS) from India. We analyze the relationship between relative shares and expenditure in these data, and show that sectoral differences in the estimated slopes do not level off and remain stable across households with different expenditure levels….This paper presents a tractable model of structural transformation that accommodates both long-run demand and supply drivers of structural change. Our main contributions are to introduce the nonhomothetic CES utility function to growth theory, show its empirical relevance and use its structure to decompose the overall observed structural change into the contribution of income and price effects. These preferences generate nonhomothetic Engel curves at any level of development, which are in line with the evidence that we have from both rich and developing countries. Moreover, for this class of preferences, price elasticities are independent from nonhomotheticity parameters, and they can be used for an arbitrary number of sectors. We argue that these are desirable theoretical and empirical properties. We estimate these preferences using household-level data for the U.S. and India, and aggregate data for a panel of 39 countries during the post-war period. We argue that nonhomothetic CES preferences provide a good fit of the data despite their parsimony. Armed with the estimated price and nonhomotheticity parameters, we then use the demand structure to decompose the broad patterns of reallocation observed in our cross-country data into the contribution of nonhomotheticities and changes in relative prices. We find that the majority of the within country variation is accounted for nonhomotheticities in demand. To conclude, we believe that the proposed preferences provide a tractable departure from homothetic preferences. They can be used in other applied general equilibrium settings that currently use homothetic CES and monopolistic competition as their workhorse model, such as international trade. These preferences can be nested in the same manner as homothetic CES. Also, as we discuss in Appendix A, it is possible to generalize nonhomothetic CES to generate variable nonhomotheticity parameters. These properties may be useful in some applications. Even in this case, nonhomothetic CES remains a local approximation (with constant nonhomotheticity parameters) and can be used to guide how the varying elasticities should be parametrized, e.g., by estimating nonhomothetic CES across sub-samples…..”

Structural Change With Long-Run Income And Price Effects: Extended Excerpt Image 1


Diego Comin, Danial Lashkari and Marti Mestieri, "Structural Change With Long-Run Income And Price Effects," National Bureau Of Economic Research, https://www.nber.org/papers/w21595.pdf

  • Business Cycle
  • Productivity
    • Workforce Reorganization
      • Manufacturing vs Services


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