We combine a structural model with cross-sectional micro data to identify the causes andconsequences of rising concentration in the US economy. Using asset prices and industrydata, we estimate realized and anticipated shocks that drive entry and concentration. Wevalidate our approach by showing...

This paper reviews alternative approaches to measuring an economy's cost competitiveness and proposes some new measures inspired by the economic theory of index numbers. The indices provide a theoretical benchmark for estimated real effective exchange rates, but differ from standard measures in...

The paper proves that in two-player logit form symmetric contestswith concave success function, commitment to a particular strategydoes not increase a player's payo, while in contests with more thantwo players it does. The paper also provides a contest-like game inwhich commitment does not...

We show that the presence of loss aversion on the part of participantsin a Tullock imperfectly discriminating contest will significantlyreduce the proportion of the rent dissipated in the form of resourcesused up in the competition for that rent...

We investigate the Nash equilibria of asymmetric, winner-take-all, imperfectlydiscriminating contests, focussing on existence, uniqueness and rentdissipation. When the contest success function is determined by a productionfunction with decreasing returns for each contestant, equilibria...

This paper shows that although small or nancially constrained environmentalistgroups may be in a weak position, relative to polluting industries, in the directcompetition for political inuence, they can compete indirectly through changingpublic preferences over environmental quality. However, in...

We present a general model of two players contest with two types of efforts. Contrary to the classical models of contest, where each player chooses a unique effort, and where the outcome depends on the efforts of all the players, contestants are allowed to reduce the effort of the opponent....

Fundamentalist organizations and the terrorists they spawn do not arise of a vacuum. Combating terrorism requires understanding the principles of groups’ formation, development and growth. We use economic theory to explain the creation and development of fundamentalist groups. In this paper we...

The compromise enhancing effect of lobbying on public policy has been established in two typical settings. In the first, lobbies are assumed to act as 'principals' and the setters of the policy (the candidates in a Downsian electoral competition or the elected policy maker in a citizen-...

This paper studies sabotage in a contest with non-identical players. Unlike previous papers, we consider sabotage in an elimination contest and allow contestants to sabotage a potential or future rival. It turns out that for a certain partition of players there is a pure-strategy equilibrium in...