Université de Zürich - Faculté des sciences économiques

Calculating tragedy: Assessing the costs of terrorism

Description: 

The trends and consequences of terrorist activities are often captured by counting the number of incidents and casualties. More recently, the effects of terrorist acts on various aspects of the economy have been analyzed. These costs are surveyed and put in perspective. As economic consequences are only a part of the overall costs of terrorism, possible approaches for estimating the utility losses of the people affected are discussed. Results using the life satisfaction approach, in which individual utility is approximated by self-reported subjective well-being, suggest that people’s utility losses may far exceed the purely economic consequences.

Risk equalization and voluntary deductibles: a complex interaction

Validity and Reliability of Willingness-to-Pay Estimates: Evidence from Two Overlapping Discrete-Choice Experiments

Description: 

Discrete-choice experiments, while becoming increasingly popular, have rarely been tested for validity and reliability. This contribution purports to provide some evidence of a rather unique type. Two surveys designed to measure willingness-to-accept (WTA) for reform op-tions in Swiss health care and health insurance are used to provide independent information with regard to two elements of reform. The issue to be addressed is whether WTA values converge although the three overlapping attributes (a more restrictive drug benefit, a delayed access to medical innovation, and a change in the monthly insurance premium) are embedded in widely differing choice sets. Experiment A contains rather radical health system reform options, while experiment B concentrates on more familiar elements such as copayment and the benefit catalogue. While mean WTA values differ between experiments, they tend to vary in similar ways, suggesting at least theoretical validity and reliability.

On the Optimal Timing of Capital Taxes

Description: 

For many kinds of capital, depreciation rates change systematically with the age of the capital. Consider an example that captures essential aspects of human capital, both regarding its accumulation and its depreciation: a worker obtains knowledge in period 0, then uses this knowledge innproduction in periods 1 and 2, and thereafter retires. Here, depreciation accelerates: it occurs at a 100% rate after period 2, and at a lowe (perhaps zero) rate before that. The present paper analyzesnthe implications of non-constant depreciation rates for the optimal timing of taxes on capital income. The main finding is that under natural assumptions, the path of tax rates over time must be oscillatory. Oscillatory tax rates are optimal when depreciation rates accelerate with the age of the capital (as in the above example), and provided that the government can commit to the path ofnfuture tax rates but cannot apply different tax rates in a given year to different vintages of capital.

Towards a Constitutional Theory of Corporate Governance

Description: 

The idea that there is a uniformly “optimal” governance structure for corporationsnfeatures prominently in current debates and policy proposals. In this paper, we propose andifferent, constitutional theory of corporate governance: the criterion for a good corporatengovernance structure is whether it is freely chosen by the shareholders. We illustrate ournapproach by comparing the constitutional rights of shareholders under US corporate law and Swiss corporate law. Moreover, we discuss the mandatory provisions that shareholders would likely include in corporate law at a constitutional stage, behind the veil of ignorance.

Evaluitis - Eine Neue Krankheit

Description: 

“Evaluitis” - i.e. ex post assessments of organizations and persons - has become a rapidly spreading disease. In addition to the well-known costs imposed on evaluees and evaluators, additional significant costs are commonly disregarded: incentives are distorted, ossification is induced and the decision approach is wrongly conceived. As a result, evaluations are used too often and too intensively. A viable and oftennsuperior alternative to evaluations is a careful selection of persons and afterwards leaving them to pursue their assigned tasks.

Money Illusion and Coordination Failure

Description: 

"Economists long considered money illusion to be largelynirrelevant. Here we show, however, that money illusion has powerfulneffects on equilibrium selection. If we represent payoffs in nominal terms,nchoices converge to the Pareto inefficient equilibrium; however, if we liftnthe veil of money by representing payoffs in real terms, the Pareto efficientnequilibrium is selected. We also show that strategic uncertainty about thenother players’ behavior is key for the equilibrium selection effects ofnmoney illusion: even though money illusi on vanishes over time if subjectsnare given learning opportunities in the context of an individual optimizationnproblem, powerful and persistent effects of money illusion are found whennstrategic uncertainty prevails."

Collateral smile

Description: 

We analyze the impact of funding costs and margin requirements on index options traded on the CBOE. Assuming differential borrowing and lending rates, we derive no-arbitrage bounds for European options. We show that funding costs and the CBOE’s margin requirements lead to a price increase, which translates into skew and smile patterns for implied volatility curves even under constant volatilities. Empirical tests confirm that our model-implied slopes have significant statistical power in explaining the slopes observed in the market. Hence, at least in part, funding costs and collateral requirements offer an institutional explanation of the volatility smile phenomenon.

Energieökonomik: Theorie und Anwendungen

Description: 

Die nachhaltige Lösung von Problemen der Energieversorgung gehört zu den zentralen Herausforderungen moderner Zivilisationen. Aus ökonomischer Sicht greifen alle Antworten zu kurz, die nicht explizit das interessengeleitete Handeln der wesentlichen Akteure berücksichtigen. Deshalb behandelt dieses Buch die nachfrage- und angebotsseitigen Gesetzmäßigkeiten der verschiedenen Energiemärkte, und zwar unter Rückgriff auf industrie- und institutionenökonomische Theoriebausteine. Die technisch-naturwissenschaftlichen Bedingungen von Gewinnung, Wandlung, Transport, Verteilung und Nutzung von Energieträgern werden dabei stets berücksichtigt. Ein wichtiges Thema für die Praktiker sind die von der Liberalisierung der leitungsgebundenen Energiemärkte ausgehenden Impulse. Wo immer möglich werden die heoretisch hergeleiteten Voraussagen durch die Konfrontation mit statistischer Evidenz auf ihre Praxisrelevanz geprüft.

Credit supply and monetary policy: identifying the bank balance-sheet channel with loan applications

Description: 

We analyze the impact of monetary policy on the supply of bank credit. Monetary policy affects both loan supply and demand, thus making identification a steep challenge. We therefore analyze a novel, supervisory dataset with loan applications from Spain. Accounting for time-varying firm heterogeneity in loan demand, we find that tighter monetary and worse economic conditions substantially reduce loan granting, especially from banks with lower capital or liquidity ratios; responding to applications for the same loan, weak banks are less likely to grant the loan. Finally, firms cannot offset the resultant credit restriction by applying to other banks. (JEL E32, E44, E52, G21, G32)

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