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Sacred values: Trade-off type matters

Previous psychological investigations revealed that sacred values (SVs; the belief that certain values are nonsubstitutable and may not be traded off, in particular, against secular economic values) modulates moral decision making depending on the type of SV infringement involved. Extending this research, we compared neurofunctional correlates determined from fMRI measurements during...

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English / 27/01/2014

Frontopolar cortex and decision-making efficiency: comparing brain activity of experts with different professional background during an exploration-exploitation task

An optimal balance between efficient exploitation of available resources and creative exploration of alternatives is critical for adaptation and survival. Previous studies associated these behavioral drives with, respectively, the dopaminergic mesocorticolimbic system and frontopolar-intraparietal networks. We study the activation of these systems in two age and gender-matched groups...

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English / 22/01/2014

Functional changes of the reward system underlie blunted response to social gaze in cocaine users

Social interaction deficits in drug users likely impede treatment, increase the burden of the affected families, and consequently contribute to the high costs for society associated with addiction. Despite its significance, the neural basis of altered social interaction in drug users is currently unknown. Therefore, we investigated basal social gaze behavior in cocaine users by...

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English / 21/01/2014

Private provision of public goods and asset prices

In capitalist societies it is the role of the state to establish the preconditions that promote societal well-being through proper functioning markets.
On the other hand enterprises have a right to provide goods and services in return for private profit. This sharp contrast between government and corporate responsibilities is created by a theoretical idealized first-best world...

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English / 01/01/2014

Reinsurance or Securitization: The Case of Natural Catastrophe Risk

We investigate the suitability of securitization as an alternative to reinsurance for the purpose of transferring natural catastrophe risk. We characterize the conditions under which one or the other form of risk transfer dominates using a setting in which reinsurers and traders in financial markets produce costly information about catastrophes. Such information is useful to insurers...

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English / 01/01/2014

Bankruptcy triggering asset value–continuous time finance approach

This paper utilizes means of game theory and option pricing to compute a bankruptcy triggering asset value. Combination of these two fields of economic study serves to separating the given problem into valuation of the payoffs, where we use option pricing and the analysis of strategic interactions between parties of a contract which could be designed and solved with the use of game...

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English / 01/01/2014

Analytical option pricing under an asymmetrically displaced double gamma jump-diffusion model

We generalize the Kou (2002) double exponential jump-diusion model in two directions. First, we independently displace the two tails of the jump size distribution away from the origin. Second, we allow for each of the displaced tails to follow a gamma distribution with an integer-valued shape parameter. Both extensions introduce additional exibility in the tails of the corresponding...

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English / 01/01/2014

Capital Adequacy Tests and Limited Liability of Financial Institutions

The theory of acceptance sets and their associated risk measures plays a key role in the design of capital adequacy tests. The objective of this paper is to investigate, in the context of bounded financial positions, the class of surplus-invariant acceptance sets. These are characterized by the fact that acceptability does not depend on the positive part, or surplus, of a capital...

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English / 01/01/2014

Capital levels and risk-taking propensity in financial institutions

Regulators dedicate much attention to a financial institution’s option to default, i.e. the option that distressed financial institutions have to transfer losses to their creditors. It is generally recognized that the existence of this option provides intermediaries with a powerful incentive to keep firm capital close to the minimal requirement. We argue, however, that...

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English / 01/01/2014

Time-changed Levy LIBOR market model: Pricing and joint estimation of the cap surface and swaption cube

We propose a novel time-changed Lévy LIBOR (London Interbank Offered Rate) market model for jointly pricing of caps and swaptions. The time changes are split into three components. The first component allows matching the volatility term structure, the second generates stochastic volatility, and the third accommodates for stochastic skew. The parsimonious model is flexible enough to...

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English / 01/01/2014

Of religion and redemption: evidence from default on islamic loans

We compare default rates on conventional and Islamic loans using a comprehensive monthly dataset from Pakistan that follows more than 150,000 loans over the period 2006:04 to 2008:12. We find robust evidence that the default rate on Islamic loans is less than half the default rate on conventional loans. Islamic loans are less likely to default during Ramadan and in big cities if the...

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English / 01/01/2014

Market frictions and corporate finance: An overview paper

We present an overview of corporate-finance models where firms are subject to exogenous market frictions. These models, albeit quite simple, yield reasonable predictions regarding financing, pay-outs and default, as well as asset-pricing implications. The price to pay for the said simplicity is the need to use non-standard mathematical techniques, namely Singular and Impulse...

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English / 01/01/2014

Computing equilibria in dynamic models with occasionally binding constraints

We propose a method to compute equilibria in dynamic models with several continuous state variables and occasionally binding constraints. These constraints induce non-differentiabilities in policy functions. We develop an interpolation technique that addresses this problem directly: It locates the non-differentiabilities and adds interpolation nodes there. To handle this flexible...

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English / 01/01/2014

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