Welfarist evaluations of decision rules under interstate utility dependencies
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We provide welfarist evaluations of decision rules for federations of states and consider models, under which the interests of people from different states are stochastically dependent. We concentrate on two welfarist standards, viz. that the expected average utility for a person in the federation be maximized or that the expected utilities for the different people be equal. We discuss an analytical result that characterizes the decision rule with maximum expected average utility, set up a class of models that display interstate dependencies and run simulations for different dependency scenarios in the European Union. We find that the results that Beisbart and Bovens (Soc Choice Welf 29:581–608, 2007) established for two types of models without interstate dependencies are fairly stable if interstate dependencies are switched on. There are exceptions, though: sometimes the way in which alternative decision rules shape the welfare distribution is significantly affected by such dependencies. These exceptions particularly include cases in which the interests of people from different states are partly anti-correlated.
KeywordsEuropean Union Decision Rule Small State Large State Vote Power
We are grateful for useful comments by two anonymous referees for “Social Choice and Welfare” and by a member of the editorial board. CB thanks the German Academic Exchange Service (DAAD) and the Center for Philosophy of Science at the University of Pittsburgh for support.
This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited.
- Beisbart C, Hartmann S (2006) Welfarism and the assessment of social decision rules. In: Endriss U, Lang J (eds) Proceedings of the 1st international workshop on computational social choice, pp 35–48Google Scholar
- Beisbart C, Bovens L, Hartmann S (2005) A utilitarian assessment of alternative decision rules in the council of ministers. European Union Politics, vol 6, pp 395–418. Appendix online http://www.uni-konstanz.de/eup/iss_64.htm
- Bovens L, Hartmann S (2007) welfare, voting and the constitution of a federal assembly. In: Galavotti MC, Scazzieri R, Suppes P (eds) Reasoning, rationality and probability. CSLI Publications, StanfordGoogle Scholar
- Fleurbaey M (2009) One stake one vote. working paperGoogle Scholar
- Felsenthal DS, Machover M (1998) The measurement of voting power: theory and practice, problems and paradoxes. Edward Elgar, CheltenhamGoogle Scholar
- Felsenthal DS, Machover M (2000) Enlargement of the EU and weighted voting in its council of ministers. Voting power report 01/00, London School of Economics and Political Science, Centre for Philosophy of Natural and Social Science, London. http://www.lse.ac.uk/vp
- Schweizer U (1990) Calculus of consent: a game-theoretic perspective. J Instit Theor Econ 146: 28–54Google Scholar
- Sen A (1997) On economic inequality. In: Forster JE, Sen A. (eds) Expanded edition with a substantial annexe. Clarendon Press, OxfordGoogle Scholar