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Altered reward anticipation: Potential explanation for weight gain in schizophrenia?

Obesity and weight gain are severe complications of mental illness, especially schizophrenia. They result from changes in lifestyle and nutrition, side effects of medication and other, less well-understood factors. Recent studies suggest that obesity and weight gain are linked to psychopathology. Specifically, severe psychopathology is associated with greater weight dysregulation,...

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English / 01/04/2017

"Mafia Inc.": when godfathers become entrepreneurs

We study the investment of criminal organizations in the legal economy. We focus on Italy, a country historically plagued by a conspicuous presence of mafia-type organizations. By using the exogenous credit contraction imposed by the 2007 financial crisis we highlight how the consequences for newly established enterprises have been less severe in areas with organized crime. Although...

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English / 01/04/2017

The Impact of Culture on Loss Aversion

Based on the literature on the relationship between culture, emotion, and loss aversion, we derive that culture can influence the degree of loss aversion. To test our hypotheses, we conduct a standardized survey in 53 countries worldwide that includes the questions from the Hofstede survey on cultural dimensions as well as lottery questions on loss aversion. The results show that...

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English / 01/04/2017

Estimating cumulative prospect theory parameters from an international survey

We conduct a standardized survey on risk preferences in 53 countries worldwide and estimate cumulative prospect theory parameters from the data. The parameter estimates show that significant differences on the cross-country level are to some extent robust and related to economic and cultural differences. In particular, a closer look on probability weighting underlines gender...

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English / 01/04/2017

Pricing and Disentanglement of American Puts in the Hyper-Exponential Jump-Diffusion Model

We analyze American put options in a hyper-exponential jump-diffusion model. Our contribution is threefold. Firstly, by following a maturity randomization approach, we solve the partial integro-differential equation and obtain a tight lower bound for the American option price. Secondly, our method allows us to disentangle the contributions of jump and diffusion for the American early...

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English / 01/04/2017

A survival analysis of islamic and conventional banks

Are Islamic banks inherently more stable than conventional banks? We address this question by applying a survival analysis based on the Cox proportional hazard model to a comprehensive sample of 421 banks in 20 Middle and Far Eastern countries from 1995 to 2010. By comparing the failure risk for both bank types, we find that Islamic banks have a significantly lower risk of failure...

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English / 01/04/2017

The neural circuitry of emotion-induced distortions of trust

Aversive emotions are likely to be a key source of irrational human decision-making but still little is known about the underlying neural circuitry. Here, we show that aversive emotions distort trust decisions and cause significant changes in the associated neural circuitry. They reduce trust and suppress trust-specific activity in left temporoparietal junction (TPJ). In addition,...

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English / 01/04/2017

Understanding peer effects: on the nature, estimation, and channels of peer effects

This paper estimates peer effects in a university context where students are randomly assigned to sections. While students benefit from better peers on average, low-achieving students are harmed by high-achieving peers. Analyzing students’ course evaluations suggests that peer effects are driven by improved group interaction rather than adjustments in teachers’ behavior or students’...

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English / 01/04/2017

Adaptive value normalization in the prefrontal cortex is reduced by memory load

Adaptation facilitates neural representation of a wide range of diverse inputs, including reward values. Adaptive value coding typically relies on contextual information either obtained from the environment or retrieved from and maintained in memory. However, it is unknown whether having to retrieve and maintain context information modulates the brain’s capacity for value adaptation...

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English / 01/04/2017

Competition in agricultural markets: an experimental approach

This paper develops an experimental approach to measure competition among intermediaries in agricultural markets, based on the random allocation of subsidies to traders. We show that, in individual-level randomizations with competitive spillovers, treatment-control differences in prices can inform an intuitive test of the degree of differentiation among firms. In the context of the...

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English / 01/04/2017

Ultrasensitivity and sharp threshold theorems for multisite systems

This work studies the ultrasensitivity of multisite binding processes where ligand molecules can bind to several binding sites. It considers more particularly recent models involving complex chemical reactions in allosteric phosphorylation processes and for transcription factors and nucleosomes competing for binding on DNA. New statistics-based...

Institution partenaire

Haute Ecole de Gestion de Genève

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English / 31/03/2017

Konjunkturanalyse: Prognose 2017/2018. Weitere Erholung der Schweizer Wirtschaft

Abrahamsen, Yngve; Abberger, Klaus; Chatagny, Florian; Dibiasi, Andreas; Eckert, Florian; Eichenberger, Livia; Funk, Anne Kathrin; Graff, Michael; Hälg, Florian; Iselin, David; Mikosch, Heiner; Neuwirth, Stefan; Sandqvist, Anna Pauliina; Rathke, Alexander; Sarferaz, Samad; Siegenthaler, Michael; Simmons-Süer, Banu; Stücker, Anne; Studer, Dominik; Sturm, Jan-Egbert

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English, Deutsch / 29/03/2017

Mapping the interconnectedness between EU banks and shadow banking entities

This paper provides a unique snapshot of the exposures of EU banks to shadow banking entities within the global financial system. Drawing on a rich and novel dataset, the paper documents the cross-sector and cross-border linkages and considers which are the most relevant for systemic risk monitoring. From a macroprudential perspective, the identification of potential feedback and...

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English / 27/03/2017

A Climate stress-test of the financial system

The urgency of estimating the impact of climate risks on the financial system is increasingly recognized among scholars and practitioners. By adopting a network approach to financial dependencies, we look at how climate policy risk might propagate through the financial system. We develop a network-based climate stress-test methodology and apply it to large Euro Area banks in a ‘green...

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English / 27/03/2017

How Media Coverage of Corporate Social Irresponsibility Increases Financial Risk Media Coverage of Corporate Social Irresponsibility

This article explores the relationship between corporate social irresponsibility (CSI) and financial risk. We posit that media coverage of CSI generates risk by providing conditions that increase the potential for stakeholder sanctions. Through analyzing an international panel of 539 firms during 2008–2013, we find that firms receiving higher CSI coverage face higher financial risk....

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English / 23/03/2017

Monetáris politika és a bankok hitelkínálata

Növeli-e az alacsony kamatláb a banki hitelkínálatot? Tanulmányunkban egy magyar, vállalati szintű hiteladatbázis panelstruktúrában történő elemzésével keressük a választ a kérdésre. Kashyap–Stein [2000] identifikációs módszerét vállalati és idő fix hatásokkal kiegészítve teszteljük a feltételezést, hogy a kamatok csökkenése különbözőképpen befolyásolja-e az alacsony és a magas...

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English / 21/03/2017

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