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101.
Equality of opportunity is often presented as a criterion which reconciles egalitarianism with principles of freedom and responsibility. This paper distinguishes between the principle of starting-line equality, which requires that everyones initial opportunities, assessed in relation to what is publicly known ex ante, are equal, and the principle that equal efforts should yield equal ex post rewards. It argues that the first principle is compatible with allocation of resources through markets but, because of the division of knowledge, the second is not. If we want the opportunities which markets give us, we have to accept ex post unfairness.
Earlier versions of this paper were presented at a workshop on the measurement of freedom at the London School of Economics, and at a conference on non-welfarist issues in normative economics at the University of Caen. I thank participants at those meetings, and particularly Tania Burchardt, Marco Mariotti and Franz Prettenthaler, for comments. My work on this paper was supported by the Leverhulme Trust. 相似文献
102.
103.
A recent literature has emerged in social choice theory which attributes intrinsic importance to freedom in the evaluation of states of affairs. The literatures philosophical basis lies in Berlins notion of positive liberty. Accordingly, axiomatic measures of availability of choices are developed and the information they convey used for ranking states on the basis of the extent of liberty they offer to individuals.
I am grateful to Nancy Cartwright, Dan Hausman and Marco Del Seta for their suggestions to previous drafts of this paper. The usual caveat applies. The support of the Centre for Philosophy of Natural and Social Science at the London School of Economics is also acknowledged. 相似文献
104.
In order to clarify the concept of equal opportunities we need an accurate definition of opportunity. Opportunities can be defined in terms of qualifying actions through which an agent can achieve an advantageous position. It is concluded that equal opportunities is often used as a catchword in cases when opportunities are not really equal, and no one tries seriously to make them so. In many of these cases it would have been more accurate to speak of open opportunities and procedural justice. These are important enough aspects of social justice, that should be appreciated for what they are, rather than being falsely represented as equal opportunities.Received: 13 April 2001 相似文献
105.
We analyze single binary-choice voting rules and identify the presence of the No-Show paradox in this simple setting, as a consequence of specific turnout or quorum conditions that are included in actual rules. Since these conditions are meant to ensure a representative outcome, we formalize this concern and reach our main result: no voting rule can ensure representation if abstention is possible, unless restrictive assumptions are made on the preference domain of abstainers. We then focus on the main referendum systems and show that appropriate restrictions do make them compatible with representation. The main purpose of our paper is, however, to provide a tool for referendum design: rather than imposing arbitrary restrictions on the preference domain of non-voters, we recommend instead that a conscious choice be made on how abstention is to be interpreted and that this choice be used to derive the corresponding referendum rule.The idea for this paper started with some jocose but insightful notes written by José João Marques da Silva at the time of the first referendum held in Portugal (1998). When José João passed away in August 2000, ISEG lost a bright, interested and friendly scholar. May we dedicate this paper to his memory. This paper was presented at the 2002 Annual Meeting of the Public Choice Society and Economic Science Association, San Diego, CA and a preliminary version was presented at the 2001 Annual Meeting of the European Public Choice Society, Paris. We would like to thank Mathew Braham, Moshé Machover, Eric Maskin, Vincent Merlin, Hannu Nurmi, Katri Sieberg, Frank Steffen, and two anonymous referees for helpful comments. The usual proviso applies. 相似文献
106.
Voters determine their preferences over alternatives based on cases (or arguments) that are raised in the public debate. Each voter is characterized by a matrix, measuring how much support each case lends to each alternative, and her ranking is additive in cases. We show that the majority vote in such a society can be any function from sets of cases to binary relations over alternatives. A similar result holds for voting with quota in the case of two alternatives.We wish to thank Enriqueta Aragones, Jean-Francois Laslier, Andrew Postlewaite, and David Schmeidler for the comments and discussions. We thank Lada Burde for her help in proofreading. 相似文献
107.
The purpose of this paper is to study the relationship between proportional representation voting system and the size of government via its effects on political equilibrium. The multiparty spatial competition on tax-transfer policy and the post-electoral coalition formation are examined. The implemented policy does not necessarily reflect the median voters preference, ranging from laissez-faire to a redistributive economy according to income distribution. It can even reflect the preference of the lower income class in spite of equal income distribution, leading to the large-scale redistribution. Our results can explain the heterogeneous sizes of government observed among European proportional representation democracies.The author is grateful for helpful comments to Masahiro Ashiya, Nobuaki Hori, Moriki Hosoe, Toshihiro Ihori, Tatsuro Kuroda, Yasuhiro Sato, and seminar participants at the University of Tokyo, Kyushu University, and Nagoya University. 相似文献
108.
This paper explores the possibility for a (non-preference-based) freedom ranking of opportunity sets that is sensitive to the diversity of the options. It turns out that how distances between sets and alternatives are measured is crucial to the derivation of such a ranking. Several proposals are examined, each of which is shown to lead to impossibility results.
Earlier versions of this paper were presented at conferences in Kortrijk, Osnabrück, Oisterwijk, Caen and Pavia. I thank the participants at these conferences for their comments. I would also like to thank Steven Hartkamp, Theo Kuipers, Clemens Puppe and especially Kotaro Suzumura for their helpful comments. Furthermore, I am very grateful to Somdeb Lahiri for pointing out a mistake in a previous version of this paper. 相似文献
109.
Given a tournament T, a Banks winner of T is the first vertex of any maximal (with respect to inclusion) transitive subtournament of T. While Woeginger shows that recognizing whether a given vertex of T is a Banks winner is NP-complete, the computation of a Banks winner of T is polynomial, and more precisely linear with respect to the size of T.The article of G.J. Woeginger appeared in Soc Choice Welfare 20: 523–528 (2003) 相似文献
110.
Bernard?MonjardetEmail author Vololonirina?Raderanirina 《Social Choice and Welfare》2004,23(3):349-382
In this paper we consider the three classes of choice functions satisfying the three significant axioms called heredity (H), concordance (C) and outcast (O). We show that the set of choice functions satisfying any one of these axioms is a lattice, and we study the properties of these lattices. The lattice of choice functions satisfying (H) is distributive, whereas the lattice of choice functions verifying (C) is atomistic and lower bounded, and so has many properties. On the contrary, the lattice of choice functions satisfying (O) is not even ranked. Then using results of the axiomatic and metric latticial theories of consensus as well as the properties of our three lattices of choice functions, we get results to aggregate profiles of such choice functions into one (or several) collective choice function(s).The authors thank two anonymous referee for several useful remarks or corrections on the first version of the paper. 相似文献