Knowledge that Transforms

This paper investigates the relative importance of cyclical fluctuations in labor and capital utilization, increasing returns to scale, and technology shocks as explanations for procyclical productivity. It exploits the intuition that materials inputs do not have variable utilization rates, and materials are likely to be used in fixed proportions with value added. Therefore, materials growth is a good measure of unobserved changes in capital and labor utilization. Using this measure shows that cyclical factor utilization is very important, returns to scale are about constant, and technology shocks are small and have low correlation with either output or hours growth.

This paper examines shares of fixed capital formation in GDP and rates of economic growth for more than 100 countries over successive five-year periods between 1965 and 1985 to determine the direction of causality between them. Simple regressions and multiple regressions including several standard determinants of growth, as well as a simple causality test, provide more evidence that increases in growth precede rises in rates of capital formation than that increases in capital formation precede increases in growth. High rates of fixed capital formation accompany rapid growth in per capita income, but we find no evidence that fixed investment is the only or main source of ignition for economic growth.

This paper explains why developed countries impose more trade barriers on middle-income countries than on either poor or other developed countries. We use a median voter model of the choice between trade and autarky embedded within an intraindustry trade model similar to Krugman. Our main result is the derivation of conditions under which a rich country rejects trade with middle-income countries, but accepts trade with either similar or poor countries. We also show that if increased inequality lowers median wealth in the developed country, the range of countries for which free trade is rejected is enlarged.

We report experiments on how players select among multiple Pareto-ranked equilibria in a coordination game. Subjects initially choose inefficient equilibria. Charging a fee to play (which makes initial equilibria money-losing) creates coordination on better equilibria. When fees are optional, improved coordination is consistent with forward induction. But coordination improves even when subjects must pay the fee (forward induction does not apply). Subjects appear to use a “loss-avoidance” selection principle: they expect others to avoid strategies that always result in losses. Loss-avoidance implies that “mental accounting” of outcomes can affect choices in games.

This paper relates the erosion of the custom of shotgun marriage to the legalization of abortion and the increased availability of contraception to unmarried women in the United States. The decline in shotgun marriage accounts for a significant fraction of the increase in out-of-wedlock first births. Several models illustrate the analogy between women who do not adopt either birth control or abortion and the hand-loom weavers, both victims of changing technology. Mechanisms causing female immiseration are modeled and historically described. This technology-shock hypothesis is an alternative to welfare and job-shortage theories of the feminization of poverty.

The paper suggests a new test for rent-sharing in the U. S. labor market. Using an unbalanced panel from the manufacturing sector, it shows that a rise in a sector's profitability leads after some years to an increase in the long-run level of wages in that sector. The paper controls for workers' characteristics, for industry fixed effects, and for unionism. Lester's range of wages is estimated, for rentsharing reasons alone, at approximately 24 percent of the mean wage.

Professional forecasters may not simply aim to minimize expected squared forecast errors. In models with repeated forecasts the pattern of forecasts reveals valuable information about the forecasters even before the outcome is realized. Rational forecasters will compromise between minimizing errors and mimicking prediction patterns typical of able forecasters. Simple models based on this argument imply that forecasts are biased in the direction of forecasts typical of able forecasters. Our models of strategic bias are rejected empirically as forecasts are biased in directions typical of forecasters with large mean squared forecast errors. This observation is consistent with behavioral explanations of forecast bias.

This paper provides evidence that financial markets can directly affect economic growth by studying the relaxation of bank branch restrictions in the United States. We find that the rates of real, per capita growth in income and output increase significantly following intrastate branch reform. We also argue that the observed changes in growth are the result of changes in the banking system. Improvements in the quality of bank lending, not increased volume of bank lending, appear to be responsible for faster growth.

Walter Nonneman, Patrick Vanhoudt; A Further Augmentation of the Solow Model and the Empirics of Economic Growth for OECD Countries*, The Quarterly Journal of E