This collection of essays honouring Dan Felsenthal and Moshé Machover reconsiders foundational aspects of the measurement of voting power. The specific case of voting power in two-tier systems - for instance the US system and the EU system - is analysed. Furthermore major power indices -...

There is no consensus on the properties of voting power indices when there is a large number of voters in a weighted-voting body. On the one hand, in some real-world cases that have been studied the power indices have been found to be nearly proportional to the weights (e.g., the EUCM, US...

Ownership structure among 470 U.K. listed companies is described by concentration indices and by "control type," the latter defined using both a fixed percentage shareholding and the "degree of control." The authors also test for possible controlling coalitions among groups of shareholders....

The definition and implementation of control is at the heart of the corporate governance debate. The paper approaches the issue by using power indices derived from the theory of cooperative games. An application to Spanish listed firms shows that incentives for large shareholders to form...

The empirical findings of the classic study of the separation of ownership and control by A. A. Berle and G. C. Means (still authorita tive after more than fifty years) are reappraised. A probabilistic vo ting model is used to define rigorously minority ownership control an d a rule for...

We investigate the method of power indices to study voting power of members of a legislature that has voting blocs. Our analysis is theoretical, intended to contribute to a theory of positive political science in which social actors are motivated by the pursuit of power as measured by objective...