Power Indices When Players Can Commit to Reject Coalitions
19 Pages Posted: 6 Nov 2014
Date Written: November 4, 2014
Power indices have been used to evaluate the allocation of power in a wide range of voting situations. While they use the language of game theory known measures of a priori voting power are hardly more than statistical expectations assuming the random behaviour of the players. We introduce a model where players can reject certain partnerships in cooperation. For normalised indices strategic rejection may increase power. Our notion of a strategic power index is well defined if power is measured by an index that takes only minimal winning coalitions into account.
Keywords: quarrelling, rejected coalitions, a priori voting power, power indices, minimal winning coalitions, rational players
JEL Classification: C71, D71
Suggested Citation: Suggested Citation