We present a generalization of spatial power indexes able to overcome their main limitations, namely: i) the excessive concentration of power measures; ii) the too high sensitivity to players' location in the ideological space. Voters' propensity to support an issue is modeled via a random utility function with two additive terms: the deterministic term accounts for voters' preference-driven/predictable behavior; the random one is a catch-all term that accounts for all the idiosyncratic/unpredictable factors. The relative strength of the two terms gives rise to a continuum of cases ranging from the Shapley value, where all aggregation patterns are equally probable, to a standard spatial value, like the Owen-Shapley index, where instead the conditional order is fully deterministic. As an illustrative application, we analyze the distribution of power in the Council of Ministers under three different scenarios: i) EU15 Pre-Nice; ii) EU27 Nice Treaty; iii) EU27 Lisbon Treaty.
Benati, S., & Vittucci Marzetti, G. (2013). Probabilistic spatial power indexes. SOCIAL CHOICE AND WELFARE, 40(2), 391-410.
Citazione: | Benati, S., & Vittucci Marzetti, G. (2013). Probabilistic spatial power indexes. SOCIAL CHOICE AND WELFARE, 40(2), 391-410. |
Tipo: | Articolo in rivista - Articolo scientifico |
Carattere della pubblicazione: | Scientifica |
Presenza di un coautore afferente ad Istituzioni straniere: | No |
Titolo: | Probabilistic spatial power indexes |
Autori: | Benati, S; Vittucci Marzetti, G |
Autori: | VITTUCCI MARZETTI, GIUSEPPE (Corresponding) |
Data di pubblicazione: | 2013 |
Lingua: | English |
Rivista: | SOCIAL CHOICE AND WELFARE |
Digital Object Identifier (DOI): | http://dx.doi.org/10.1007/s00355-011-0608-4 |
Appare nelle tipologie: | 01 - Articolo su rivista |
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