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Social rationality, separability, and equity under uncertainty

FLEURBAEY, Marc; GAJDOS, Thibault; ZUBER, Stéphane - Center for Operations Research and Econometrics (CORE), … - 2010

Harsanyi (1955) proved that, in the context of uncertainty, social ratio- nality and the Pareto principle impose severe constraints on the degree of priority for the worst-off that can be adopted in the social evaluation. Since then, the literature has hesitated between an ex ante approach that...

Persistent link: https://www.econbiz.de/10008642214

On the Political Sustainability of Redistributive Social Insurance Systems.

Casamatta, G.; Cremer, H.; Pestieau, P. - Center for Operations Research and Econometrics (CORE), … - 1998

We consider social insurance schemes with a two-part benefit formula: a flat (constant) term and a variable term which … is proportional to individuals' contributions. The factor of proportionality defines the type of social insurance. We … adopt a two-stage political economy approach. At the first, constitutional stage, the type of social insurance is chosen …

Persistent link: https://www.econbiz.de/10005478912

Optimal Population Without Repugnant Aspects.

Michel, P.; Pestieau, P - Center for Operations Research and Econometrics (CORE), … - 1996

This paper addresses the issue of optimum population with two concerns : avoiding both the absolute repugnant solution that amounts to giving to an infinite number an infinitesimal amount and the marginal repugnant solution in which equilibrium consumption decresases with income. To avoid these...

Persistent link: https://www.econbiz.de/10005478961

The Relevance of Extrinsic Uncertainty.

Polemarchakis, H; Ventura, L - Center for Operations Research and Econometrics (CORE), … - 1995

Extrinsic uncertainty is effective at a competitive equilibrium. This is generic if spot markets are inoperative: the only objects of exchange are assets for the contingent delivery of commodities; and the asset market is incomplete. The structure of payoffs of assets may allow for non-trivial...

Persistent link: https://www.econbiz.de/10005207637

Nash - Walras Equilibria.

Ghosal, S; Polemarchakis, H - Center for Operations Research and Econometrics (CORE), … - 1995

At a Nash-Walras equilibrium, individuals exchange commodities competitively, and, simultaneously, they interact strategically. Under standard assumptions, Nash-Walras equilibria exist, equilibrium profiles of actions are, typically, determinate byt Pareto suboptimal, though not constrained...

Persistent link: https://www.econbiz.de/10005207647

Ordering, equity and non-expected utility theory

SAVAGLIO, Ernesto - Center for Operations Research and Econometrics (CORE), … - 2002

According to Chateauneuf (1996), we compare some inequality criteria. We investigate their properties and characteristics. Then, following the approach that links different levels of deprivation with alternative values of social welfare, we look for a functional that evaluates the well-being of...

Persistent link: https://www.econbiz.de/10005043136

Welfare improving barter in imperfect competition

CRESTI, Barbara - Center for Operations Research and Econometrics (CORE), … - 2002

This paper offers a rationale for the development of the barter industry in industrialized economies. It argues that, in a context of imperfect competition, barter represents a profitable and efficient system of exchange. Thanks to barter, even if already at the optimum, a monopolist can still...

Persistent link: https://www.econbiz.de/10005043495

Unfair inequalities in health and health care

FLEURBAEY, Marc; SCHOKKAERT, Erik - Center for Operations Research and Econometrics (CORE), … - 2007

Inequalities in health and health care are caused by different factors. Measuring "unfair"inequalities implies that a distinction is introduced between causal variables leading toethically legitimate inequalities and causal variables leading to ethically illegitimateinequalities. An example of...

Persistent link: https://www.econbiz.de/10005043673

Constrained Suboptimality and Financial Innovation in GEI with a Single Commodity.

Tirelli, M. - Center for Operations Research and Econometrics (CORE), … - 2000

In this paper we exploit global analysis to explore welfare properties of a standard one-commodity GEI, under different notions of constrained Pareto optimality. In a unifying framework we revise and extend some of the leading results of the literature on incomplete markets and government...

Persistent link: https://www.econbiz.de/10005633993

EGALITARIAN-EQUIVALENT COST-SHARING AND THE M.D.P. PROCESS FOR THE PROVISION OF A PUBLIC GOOD.

YEN, P-Y. - Center for Operations Research and Econometrics (CORE), … - 1989

Persistent link: https://www.econbiz.de/10005633996