世界経済・社会統計 = World development indicators

Output per worker varies enormously across countries. Why? On an accounting basis, our analysis shows that differences in physical capital and educational attainment can only partially explain the variation in output per worker--we find a large amount of variation in the level of the Solow residual across countries. At a deeper level, we document that the differences in capital accumulation, productivity, and therefore output per worker are driven by differences in institutions and government policies, which we call social infrastructure. We treat social infrastructure as endogenous, determined historically by location and other factors captured in part by language.

/pdf/why-do-some-countries-produce-so-much-more-output-per-worker-r25pge75qn.pdf

Why Do Some Countries Produce so Much More Output Per Worker than Others

Does finance affect economic growth? A number of studies have identified a positive correlation between the level of development of a country's financial sector and the rate of growth of its per capita income. As has been noted elsewhere, the observed correlation does not necessarily imply a causal relationship. This paper examines whether financial development facilitates economic growth by scrutinizing one rationale for such a relationship; that financial development reduces the costs of external finance to firms. Specifically, we ask whether industrial sectors that are relatively more in need of external finance develop disproportionately faster in countries with more developed financial markets. We find this to be true in a large sample of countries over the 1980s. We show this result is unlikely to be driven by omitted variables, outliers, or reverse causality.

/pdf/financial-dependence-and-growth-2meheeba1z.pdf

Financial Dependence and Growth

Output per worker varies enormously across countries. Why? On an accounting basis our analysis shows that differences in physical capital and educational attainment can only partially explain the variation in output per worker—we find a large amount of variation in the level of the Solow residual across countries. At a deeper level, we document that the differences in capital accumulation, productivity, and therefore output per worker are driven by differences in institutions and government policies, which we call social infrastructure. We treat social infrastructure as endogenous, determined historically by location and other factors captured in part by language. In 1988 output per worker in the United States was more than 35 times higher than output per worker in Niger. In just over ten days the average worker in the United States produced as much as an average worker in Niger produced in an entire year. Explaining such vast differences in economic performance is one of the fundamental challenges of economics. Analysis based on an aggregate production function provides some insight into these differences, an approach taken by Mankiw, Romer, and Weil [1992] and Dougherty and Jorgenson [1996], among others. Differences among countries can be attributed to differences in human capital, physical capital, and productivity. Building on their analysis, our results suggest that differences in each element of the production function are important. In particular, however, our results emphasize the key role played by productivity. For example, consider the 35-fold difference in output per worker between the United States and Niger. Different capital intensities in the two countries contributed a factor of 1.5 to the income differences, while different levels of educational attainment contributed a factor of 3.1. The remaining difference—a factor of 7.7—remains as the productivity residual. * A previous version of this paper was circulated under the title ‘‘The Productivity of Nations.’’ This research was supported by the Center for Economic Policy Research at Stanford and by the National Science Foundation under grants SBR-9410039 (Hall) and SBR-9510916 (Jones) and is part of the National Bureau of Economic Research’s program on Economic Fluctuations and Growth. We thank Bobby Sinclair for excellent research assistance and colleagues too numerous to list for an outpouring of helpful commentary. Data used in the paper are available online from http://www.stanford.edu/,chadj.

/pdf/why-do-some-countries-produce-so-much-more-output-per-worker-4zwsdbv6gk.pdf

Why do Some Countries Produce So Much More Output Per Worker than Others

The present historical moment may seem a particularly inopportune time to review Bowling Alone, Robert Putnam's latest exploration of civic decline in America. After all, the outpouring of volunteerism, solidarity, patriotism, and self-sacrifice displayed by Americans in the wake of the September 11 terrorist attacks appears to fly in the face of Putnam's central argument: that \"social capital\" -defined as \"social networks and the norms of reciprocity and trustworthiness that arise from them\" (p. 19)'has declined to dangerously low levels in America over the last three decades. However, Putnam is not fazed in the least by the recent effusion of solidarity. Quite the contrary, he sees in it the potential to \"reverse what has been a 30to 40-year steady decline in most measures of connectedness or community.\"' As an example of how the current \"war on terrorism\" could generate a durable civic renewal, Putnam points to the burst in civic practices that occurred during and after World War II, which he says \"permanently marked\" the generation that lived through it and had a \"terrific effect on American public life over the last half-century.\" 3 If Americans can follow this example and channel their current civic

Bowling alone: The collapse and revival of American community

Colombia's PACES program provided over 125,000 poor children with vouchers that covered the cost of private secondary school. The vouchers were renewable annually conditional on adequate academic progress. Since many vouchers were assigned by lottery, program effects can reliably be assessed by comparing lottery winners and losers. Estimates using administrative records suggest the PACES program increases secondary school completion rates by 15 to 20 percent. Correcting for the greater percentage of lottery winners taking college admissions tests, the program increased test scores by two-tenths of a standard deviation in the distribution of potential test scores. (JEL: I21, J12, I28)

/pdf/long-term-educational-consequences-of-secondary-school-1uf270mrnm.pdf

Long-Term Educational Consequences of Secondary School Vouchers: Evidence from Administrative Records in Colombia

Twenty-five percent of teachers were absent from school, and only about half were teaching, during unannounced visits to a nationally representative sample of government primary schools in India. Absence rates varied from 15% in Maharashtra to 42% in Jharkhand, with higher rates concentrated in the poorer states. We do not find that higher pay is associated with lower absence. Older teachers, more educated teachers, and head teachers are all paid more but are also more frequently absent; contract teachers are paid much less than regular teachers but have similar absence rates; and although relative teacher salaries are higher in poorer states, absence rates are also higher. Teacher absence is more correlated with daily incentives to attend work: teachers are less likely to be absent at schools that have been inspected recently, that have better infrastructure, and that are closer to a paved road. We find little evidence that attempting to strengthen local community ties will reduce absence. Teachers from the local area have similar absence rates as teachers from outside the community. Locally controlled nonformal schools have slightly higher absence rates than schools run by the state government. The existence of a PTA is not correlated with lower absence. Private-school teachers are only slightly less likely to be absent than public-school teachers in general, but are 8 percentage points less likely to be absent than public-school teachers in the same village. (JEL: O15, I21, H41, H52)

/pdf/teacher-absence-in-india-a-snapshot-3z0e8e7i08.pdf

Teacher absence in india: a snapshot

In 1839 the French government purchased the Daguerreotype patent and placed it in the public domain. Such patent buyouts could potentially eliminate the monopoly price distortions and incentives for rent-stealing duplicative research created by patents, while increasing incentives for original research. Governments could offer to purchase patents at their estimated private value, as determined in an auction, times a markup equal to the typical ratio of inventions' social and private value. Most patents purchased would be placed in the public domain, but to induce bidders to reveal their valuations, a few would be sold to the highest bidder.

/pdf/patent-buyouts-a-mechanism-for-encouraging-innovation-5b8v3n1pl9.pdf

Patent Buyouts: A Mechanism for Encouraging Innovation

Evidence from the US, Britain, and France suggests that recent growth in wage inequality has been accompanied by greater segregation of high- and low-skill workers into separate firms. A model in which workers of different skill-levels are imperfect substitutes can simultaneously account for these increases in segregation and inequality either through technological change, or, more parsimoniously, through observed changes in the skill-distribution

/pdf/wage-inequality-and-segregation-by-skill-2bjjpijlks.pdf

Wage inequality and segregation by skill

This brief summarizes the results of a gender impact evaluation study, entitled Incentives to learn, conducted between March 2001 and March 2002 school year in Kenya. The study observed the impact of merit scholarship program on adolescent girls in Kenya on the student level. Girls who were eligible for the scholarships had significantly higher test scores than comparison schoolgirls. The effect size was about 0.2 to 0.3 standard deviations. Teacher attendance also improved significantly in program schools. There were positive externalities on girls who started off with low baseline scores who had little chance of receiving the scholarship. There is evidence that the scholarship program did not reduce intrinsic motivation. Funding for the study derived from the World Bank and the MacArthur Foundation.

Michael Kremer

Papers

Long-Term Educational Consequences of Secondary School Vouchers: Evidence from Administrative Records in Colombia

Teacher absence in india: a snapshot

Patent Buyouts: A Mechanism for Encouraging Innovation

Wage inequality and segregation by skill

Incentives to learn