Global environmental problems and the strategic choice of technology

Reductions of environmentally harmful emissions are often a public good in a global context. For strategic reasons, countries may adopt a technology with high per unit cost of emission reduction, even if a technology with lower per unit cost is available at no extra cost. They thereby credibly commit themselves to not reducing emission much in the future. In a game of private voluntary provision of emission reduction, this commitment will make other countries increase their emission reductions. Also, in the case where countries cooperate in the future, such commitment gives a country a strategic advantage, because it shifts the disagreement point in a favorable direction.     

The Austrian current account deficit: Driven by twin deficits or by intertemporal expenditure allocation?

The evidence presented in the paper rejects the twin deficit hypothesis for the Austrian current account balance during the last two decades. The results are based on an estimate of a vector error correction model including quarterly data for the current account balance and potentially relevant variables driving its dynamics. We compute the variance decomposition of the current account's forecast error and its generalized impulse responses to shocks in the innovations of the system. The results in favor of intertemporal expenditure reallocation cannot be reproduced within a second analysis including the current account and a measure of net output, however. The estimated implicit current account balance, interpreted as the discounted expected change in future net output, does not follow the actual behaviour of the current account. First version received: June 1999/Final version received: March 2001     

An axiomatic characterization of a generalized index of concentration

The Hannah-Kay [1977] generalized concentration index contains the well-known Herfindahl [1950]-Hirschman [1945] and the entropy indices as particular cases. In this papaer we show that the Hannah-Kay class can be regarded as a particular member of a generalized family of indices, which we refer to as self-weighted quasilinear means. We then show that among all self-weighted quasilinear means the Hannah-Kay family is the only class of concentration indices which satisfies the replication principle, a requirement which states that an m-fold replication of the industry, firm by firm, will multiply the concentration index by the factor 1/m.The refereeing process of this paper was handled through N.R. Adam.We are grateful to two anonymous referees for their suggestions.     

Probleme gleichgewichtsorientierter Inflationserklärungen

Ohne ZusammenfassungHerrn Doz. Abele und Herrn Dr. Beinsen bin ich für die kritische Durchsicht dieser Arbeit zu Dank verpflichtet. Doz. Abele hat mir vor allem allgemeine Hinweise zum Stand der Theorie gegeben, die mich zu dieser Arbeit erst so recht anregten.     

The short-term responsiveness of consumer expenditures in the Austrian economy

Zusammenfassung Ziel dieser Arbeit ist es, die kurzfristige Reagibilität von verschiedenen Konsumentenausgaben innerhalb eines theoretischen Rahmens, der alle Ausgabenkategorien symmetrisch behandelt, zu schätzen. Angesichts der Beschränkungen, die von den Daten her auferlegt werden, werden nicht alle Ausgabenkategorien in der Analyse berücksichtigt, aber die Parameter der Gleichungen der vernachlässigten Kategorien können kraft der Eigenschaften des Modells als Restgrößen bestimmt werden.Die Parameter der Gleichung für die Ausgaben für nichtdauerhafte Konsumgüter und Dienstleistungen sind konsistent mit der Auffassung, wie sie in der Life-Cycle Hypothese und der Permanenten-Einkommenshypothese formuliert wird, daß diese Konsumausgaben eher vom Vermögen als von der Liquidität beschränkt sind, und dem langfristigen Trend des verfügbaren Einkommens folgen. Dagegen reagieren die Ausgaben für dauerhafte Konsumgüter und die Aufnahme von Konsumkrediten sehr stark auf Erhöhungen der laufenden Einkommen.Die gesamten Konsumausgaben reagieren jedoch eher zögernd auf Einkommensänderungen, auch wenn diese als permanent betrachtet werden. Ein Anstieg der Einkommen um 1% bewirkt im Durchschnitt der folgenden vier Quartale eine Veränderung der Konsumausgaben um etwa 1/2%. Die Möglichkeit, die Wirtschaft durch eine flexible Handhabung von Änderungen in den Einkommensteuersätzen und in den Transfereinkommen zu stabilisieren, sind daher relativ beschränkt.     

A theory of sequential reciprocity

Many experimental studies indicate that people are motivated by reciprocity. Rabin [Amer. Econ. Rev. 83 (1993) 1281] develops techniques for incorporating such concerns into game theory and economics. His theory is developed for normal form games, and he abstracts from information about the sequential structure of a strategic situation. We develop a theory of reciprocity for extensive games in which the sequential structure of a strategic situation is made explicit, and propose a new solution concept—sequential reciprocity equilibrium—for which we prove an equilibrium existence result. The model is applied in several examples, and it is shown that it captures very well the intuitive meaning of reciprocity as well as certain qualitative features of experimental evidence.     

A General Theory of Competition: Resources,Competences, Productivity,Economic Growth by Shelby D. Hunt

The Review of Austrian Economics -     

Will the (German) NAIRU Please Stand Up?

Abstract. This paper deals with a critical assessment of the ‘non‐accelerating inflation rate of unemployment’ (NAIRU) for Germany. There are quite a few obstacles to perceiving the NAIRU as an easy‐to‐use analytical instrument: the possibility of a non‐vertical Phillips curve, the occurrence of shocks and hysteresis effects, and the (mis‐)measurement of important variables, cointegration issues and a time variability of the NAIRU. A new attempt is made to estimate a NAIRU for Germany using direct measures of inflationary expectations. However, by any method, the NAIRU is very hard to determine and subject to considerable arbitrariness.