Conformism and diversity under social learning

Summary. When there are competing technologies or products with unknown payoffs an important question is which technology will prevail and whether technologies with different payoffs can coexist in the long run. In this paper, we use a social learning model with local interactions to study this question. We show that the adoption of technologies as well as the prospects of conformism/diversity depend crucially on the nature of interaction between individuals and the heterogeneity of preferences in a society. Received: May 10, 1999; revised version: February 4, 2000     

Regulatory risk, market uncertainties, and firm financing choices: Evidence from U.S. Electricity Market Restructuring

Based on the universe of rate-regulated electric utilities in the U.S., we examine why firms alter their financing decisions when transitioning from a regulated to a competitive market regime. We find that the significant increase in regulatory risk after the passage of the Energy Policy Act, state-level restructuring legislations, and divestiture policies have reduced leverage by 15 percent. Policies that encouraged competition, and hence increased market uncertainty, lowered leverage by another 13 percent on average. The ability to exercise market power allowed some firms to counter this competitive threat. In aggregate, regulatory risk and market uncertainty variables reduce leverage between 24.6 and 26.7 percent. We also confirm findings in the literature that firms with higher profitability and higher asset growth have lower leverage, and those with more tangible assets are more levered. Firms with greater access to internal capital markets and those with a footloose customer segment use less debt, while those actively involved in trading power in the wholesale market use more debt.     

On the possibility of efficient bilateral trade

I study a sequential process in which different pairs of traders bargain over the terms of trade of an indivisible good. I consider bothone-sided andtwo-sided offers based bargaining at the stage-game level. The sequential process is modelled as an infinite stage-game of incomplete information and the paper studies the efficiency properties of its equilibria. It is shown: With one-sided offers, all equilibria are long-run ex post efficient; with two-sided offers, examples of equilibria are constructed with widely varying efficiency properties. This paper is based on Chapter 1 of my Ph.D thesis.     

Who Is My Peer? A Valuation‐Based Approach to the Selection of Comparable Firms

This study presents a general approach for selecting comparable firms in market-based research and equity valuation. Guided by valuation theory, we develop a "warranted multiple" for each firm, and identify peer firms as those having the closest warranted multiple. We test this approach by examining the efficacy of the selected comparable firms in predicting future (one- to three-year-ahead) enterprise-value-to-sales and price-to-book ratios. Our tests encompass the general universe of stocks as well as a sub-population of so-called "new economy" stocks. We conclude that comparable firms selected in this manner offer sharp improvements over comparable firms selected on the basis of other techniques.     

A fractile programming approach with extreme sample estimates of parameters

Abstract This paper investigates the implications of extreme value estimates of net prices in the objective function of a linear programming problem. Analytically, our approach suggests interesting points of comparison between different measures of sensitivity of a linear programming problem, when a specified fractile of the distribution of profits is optimized.
Work done under the National Science Foundation Project GS-1810–420–21–17 at the Department of Economics, Iowa State University.     

Bribery in International Business in Post-Soviet Union Countries

Data from 1996 to 2016 on perceived levels of bribe taking in 15 post-Soviet Union countries indicate three distinct groups—Russia and seven contiguous countries are most prone to bribe taking, a set of four countries in the southwest less so, and the three Baltic nations are the least corrupt. Public officials in countries that have high economic freedom and human development, are democracies, and proactively adhere to global anti-bribery treaties are less likely to take bribes. The findings show that despite a common recent history, the countries have evolved differently following the breakup. Implications for international businesses are discussed.     

The short-run impact of fluctuating primary commodity prices on three developing economies: Columbia,Ivory Coast and Kenya

Computable general equilibrium models are used to study the short-run impact of fluctuating primary commodity prices on the economies of Columbia, Ivory Coast and Kenya. The results indicate that these economies are destabilized by primary commodity price fluctuations unless governments act to hold real domestic absorption constant. To achieve this, however, would require foreign exchange reserves in excess of the level normally available to these governments for the purpose of stabilizing domestic economic activity.     

A test of the efficiency of futures markets in commodities

Zusammenfassung Ein Test der Effizienz von Warenterminm?rkten. — In Reaktion auf die UNCTAD-Pl?ne zur Stabilisierung von Rohstoffpreisen durch beh?rdliche Ausgleichslager hat sich die Diskussion um Warenterminm?rkte als alternative, marktkonforme Stabilisierungsinstrumente erneut entfacht. Eine wesentliche Voraussetzung für den stabilisierenden EinfluΒ der Termingesch?fte auf die Kassapreise von Rohstoffen ist, daΒ die Terminm?rkte ?effizient? sind, d. h., die Terminmarktpreise s?mtliche jeweilig verfügbare Information widerspiegeln. In diesem Aufsatz wird die Effizienz der Terminm?rkte für fünf wichtige Rohstoffe (Kupfer, Zinn, Zucker, Kakao und Kaffee) des UNCTAD-Programms getestet. Dazu werden ARIMAZeitreihenmodelle der Kassapreise gesch?tzt und die Entwicklungen ex post vorhergesagt. Die so gewonnenen Ex-post-Prognosen sind effiziente Vorhersagen, da die Modelle alle systematischen Komponenten einer Zeitreihe erfassen, so daΒ der unerkl?rte Rest zufallsverteilt ist. Ein Vergleich zwischen dem mittleren quadrierten Vorhersageirrtum der Prognosemodelle und dem der Warenterminm?rkte zeigt, daΒ die Terminm?rkte in allen F?llen künftige Entwicklungen ebensogut oder besser anzeigen als die Modelle. Folglich kann die Hypothese, daΒ die untersuchten M?rkte im oben beschriebenen Sinn effizient sind, nicht verworfen werden.

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Résumé Un test de l’efficacité des marchés á terme des matières premières. — cet article nous faisons un test ?demi-fort? sur l’efficacité de marché pour cinq matières — le cuivre, l’étain, le sucre, le cacao et le café — pour lesquelles la CNUCED a proposé de stabiliser les prix par des schemes des stocks régulateurs. Les résultats indiquent que, pour la période observée, on ne peut pas refuser 1’ hypothèse que les marchés á terme de ces matières premières sont efficaces dans le sens que le marché emploie toutes les informations publiquement disponibles en formant les expectatives sur les prix au comptant futurs. Nous concluons que la stabilisation des prix au comptant de quelques matières premières pourrait être regardée comme alternative favorable vis-á-vis les schemes des stocks régulateurs de la CNUCED.

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Resumen El test de la eficiencia de mercados a futuro de productos primarios. — En este articulo se realiza un test de eficiencia de mercado de forma ?semi-fuerte? para cinco productos, espedficamente, cobre estafio, azücar, cacao, y café, cuyos precios UNCTAD ha propuesto estabilizar a través de esquemas de stocks amortiguadores. Los resultados indican que para el periodo estudiado, la hip?tesis de que los mercados a futuro para estos productos son eflcientes en el sentido de que el mercado emplea toda la informacion que se puede obtener püblicamente, informando sobre expectativas de los precios puntuales futuros, no puede ser rechazada. Se concluye entonces, que la estabilización de los precios puntuales para algunos productos primarios a través de mercados a futuro puede ser considerada como una alternativa favorable frente a los esquemas de Stocks amortiguadores de UNCTAD.

     

International industrial buyer behavior: An exploration and a proposed model

A large proportion of world’s trade revolves around a long list of industrial products which are pruchased by industrial buyers. Although it has been suggested that the impact of culture on international markets is more predominant in the consumer goods than industrial goods (Keegan 1984), little has been done in terms of understanding other variables besides culture that effect the international industrial buyer and his/her behavior.     

What happens to social spending in IMF-supported programmes?

This article finds that education and health spending has risen during International Monetary Fund (IMF)-supported programmes at a faster pace than in developing countries as a whole. The analysis is based on the most comprehensive dataset assembled thus far for this purpose, with data covering 1985 to 2009 for 140 countries. Controlling for other determinants of education and health spending, including macroeconomic conditions, the results confirm that IMF-supported programmes have a positive and significant effect on social spending in low-income countries. Over a 5-year period with IMF-supported programmes, spending for education increases by about ¾ percentage point of Gross Domestic Product (GDP); and for health, by about 1 percentage point of GDP. IMF-supported programmes are also associated with increases in the share of government spending allocated to education and health.