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Mortality inequality: the good news from a county-level approach

In this essay, we ask whether the distributions of life expectancy and mortality have become generally more unequal, as many seem to believe, and we report some good news. Focusing on groups of counties ranked by their poverty rates, we show that gains in life expectancy at birth have actually been relatively equally distributed between rich and poor areas. Analysts who have...

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English / 01/04/2016

Saving more in groups: field experimental evidence from Chile

We test the impact of a peer group savings program on precautionary savings, through two randomized field experiments among 2,687 microcredit clients. The first experiment finds that the Peer Group Treatment, which combines public goal setting, monitoring in the group, and non-financial rewards, increases savings in a new savings account significantly. The number of deposits grows 3....

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English / 01/04/2016

Mastering temptation: Behavioral, neuraland physiological investigations of self-control in goal-directed choice

Self-control is a key skill that has important implications for life success. Parallel research programs in psychology, economics, and most recently neuroeconomics have identified important correlates and outcomes of self-control. Among those are for example educational achievements, financial stability, and health. However, the cognitive mechanisms underlying self-control remain...

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English / 01/04/2016

Shared neural basis of social and non-social reward deficits in chronic cocaine users

Changed reward functions have been proposed as a core feature of stimulant addiction, typically observed as reduced neural responses to non-drug-related rewards. However, it was unclear yet how specific this deficit is for different types of non-drug rewards arising from social and non-social reinforcements. We used functional neuroimaging in cocaine users to investigate explicit...

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English / 12/03/2016

An envelope approach to tournament design

Optimal rank-order tournaments have traditionally been studied using a first-order approach. The present analysis relies instead on the construction of an "upper envelope" over all incentive compatibility conditions. lt turns out that the first-order approach is not innocuous. For example, in contrast to the traditional understanding, tournaments may be dominated by piece...

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English / 01/03/2016

Efficient computation of adjusted p-values for resampling-based stepdown multiple testing

There has been a recent interest in reporting p-values adjusted for the resampling-based stepdown multiple testing procedures proposed in Romano and Wolf (2005a,b). The original papers only describe how to carry out multiple testing at a fixed significance level. Computing adjusted p-values instead in an efficient manner is not entirely trivial. Therefore, this paper fills an...

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English / 01/03/2016

Dynamic R&D networks with process and product innovations

We analyze the endogenous formation of R&D networks, where firms are active in different product markets and can benefit from R&D spillovers form collaborating firms within or across different industries. R&D spillovers help firms to introduce process innovations to lower their production costs. Product innovations introduce an escape-competition effect, through which...

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English / 01/03/2016

The brain’s functional network architecture reveals human motives

In humans, two completely different motives may nevertheless lead to exactly the same behavior. Because we can't directly observe motives, modern economists often completely disregard them. However, Hein et al., using fMRI, show that different human motives can yield observable responses in the brain (see the Perspective by Gluth and Fontanesi). In empathy-based and reciprocity-...

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English / 01/03/2016

Quantitative models of commercial policy

What tariffs would countries impose if they did not have to fear any retaliation? What would occur if there was a complete breakdown of trade policy cooperation? What would be the outcome if countries engaged in fully efficient trade negotiations? And what would happen to trade policy cooperation if the world trading system had a different institutional design? While such questions...

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English / 01/03/2016

Mirrlees meets Diamond-Mirrlees

We show that the Diamond and Mirrlees (1971) linear tax model contains the Mirrlees (1971) nonlinear tax model as a special case. In this sense, the Mirrlees model is an application of Diamond-Mirrlees. We also derive the optimal tax formula in Mirrlees from the Diamond-Mirrlees formula. In the Mirrlees model, the relevant compensated cross-price elasticities are zero, providing a...

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English / 01/03/2016

Optimal taxation with rent-seeking

We develop a framework for optimal taxation when agents can earn their income both in traditional activities, where private and social products coincide, and in rent-seeking activities, where private returns exceed social returns either because they involve the capture of pre-existing rents or because they reduce the returns to traditional work. We characterize Pareto optimal income...

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English / 01/03/2016

Reference price formation for product innovations: the role of consistent price-value-relationships

When deciding between product alternatives, consumers have to compare the observed prices to their internal reference price to determine whether the offer is a good deal or not. For product innovations, for which no reference price has been established, it is unclear against which standard the observed price is compared. Despite extensive research on the use of reference prices,...

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English / 19/02/2016

Québécoisation method for the pricing of Parisian options with jump risk

In this paper, a new technique for pricing of European and American Parisian options, that we call the québécoisation method, is developed. We study the pricing of Parisian options in a hyper-exponential jump-diffusion model using the double Laplace-Carson transform with respect to the time to maturity and the residual Parisian time (time to expiration of the Parisian window) of the...

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English / 10/02/2016

Interconnectedness as a source of uncertainty in systemic risk

Financial networks have shown to be important in understanding systemic events in credit markets. In this paper, we investigate how the structure of those networks can affect the capacity of regulators to assess the level of systemic risk. We introduce a model to compute the individual and systemic probability of default in a system of banks connected in a generic network of credit...

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English / 02/02/2016

The political color of fiscal responsability

We propose a dynamic general equilibrium model that yields testable implications about the fiscal policy run by governments of different political color. Successive generations of voters choose taxation, expenditure, and government debt through repeated elections. Voters are heterogeneous by age and by the intensity of their preferences for public good provision. The political...

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English / 01/02/2016

Subjective completion beliefs and the demand for post-secondary education

The outcome of pursuing a post-secondary educational degree is uncertain. A student might not complete a chosen degree for a number of reasons, such as academic insufficiency or financial constraints. Thus, when considering whether to invest in post-secondary education, students must factor in their completion probability into their decision. We study the role of this uncertainty in...

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English / 01/02/2016

Dopamine regulates stimulus generalization in the human hippocampus

The ability to generalize previously learned information to novel situations is fundamental for adaptive behavior. However, too wide or too narrow generalization is linked to neuropsychiatric disorders. Previous research suggests that interactions between the dopaminergic system and the hippocampus may play a role in generalization, but whether and how the degree of generalization...

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English / 01/02/2016

The distributional consequences of large devaluations

We study the differential impact of large exchange rate devaluations on the cost of living at different points on the income distribution. Across product categories, the poor have relatively high expenditure shares in tradeable products. Within tradeable product categories, the poor consume lower-priced varieties. Changes in the relative price of tradeables and the relative prices of...

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English / 01/02/2016

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