Base consumption levels and fixed costs

Conditioning variables on consumer choices are conventionally included in demand functions additively. We identify the underlying utility maximisation problem. There must be base consumption levels efficiently set which vary with the conditioning variables. A special case is quasi-homothetic preferences.     

Social Protection in a Crisis: Argentina's Plan Jefes y Jefas

The article assesses the impact of Argentina’s main socialpolicy response to the severe economic crisis of 2002. The programwas intended to provide direct income support for families withdependents and whose head had become unemployed because of thecrisis. Counterfactual comparisons are based on a matched subsetof applicants not yet receiving program assistance. Panel dataspanning the crisis are also used. The program reduced aggregateunemployment, though it attracted as many people into the workforcefrom inactivity as it did people who otherwise would have beenunemployed. Although there was substantial leakage to formallyineligible families and incomplete coverage of those who wereeligible, the program did partially compensate many losers fromthe crisis and reduced extreme poverty.     

Dynamics of relational goods

We propose a model of social relationships in which relational goods are the results of individual joint efforts and past attitudes toward socialising. We show the effect of individual different inclinations toward social relationships on the dynamic properties of the system either assuming homogeneous or heterogeneous individuals. Particularly, we show the role assumed by the environment and past experience of individuals on the dynamic outcome. We use a triangular finite-different system to investigate these issues. We analyse the conditions for the convergence of the system to a low-socialising trap and we propose a few policy corrections to get out of it.     

Belief heterogeneity and survival in incomplete markets

In complete markets economies (Sandroni in Econometrica 68:1303–1341, 2000), or in economies with Pareto optimal outcomes (Blume and Easley in Econometrica 74:926–966, 2006), the market selection hypothesis holds, as long as traders have identical discount factors. Traders who survive must have beliefs that merge with the truth. We show that in incomplete markets, regardless of traders’ discount factors, the market selects for a range of beliefs, at least some of which do not merge with the truth. We also show that impatient traders with incorrect beliefs can survive and that these incorrect beliefs impact prices. These beliefs may be chosen so that they are far from the truth.     

Educational qualifications mismatch in Europe. Is it demand or supply driven?

Most papers dealing with individual overeducation risks focus on labour supply characteristics and workers’ behaviour. On the other hand, only few studies consider labour demand characteristics and technological change. In this paper we analyse the influence of both demand and supply factors on educational mismatch in a set of 10 European countries. Our hypothesis, confirmed by results obtained using ordered probit model with sample selection, is that demand factors generally play a major role in reducing educational mismatch in technologically more advanced countries, whereas supply factors are more important in countries that are lagging behind in the international division of labour. At the same time, important cross-country and gender differences have been identified in how the demand/supply factors operate. All this calls for the fine-tuning of policies intended to tackle the problem of educational mismatch.     

Representation of the penalty term of dynamic concave utilities

In the context of a Brownian filtration and with a fixed finite time horizon, we provide a representation of the penalty term of general dynamic concave utilities (hence of dynamic convex risk measures) by applying the theory of g-expectations.