Evolutionary dynamics of Lewis signaling games: signaling systems vs. partial pooling

Transfer of information between senders and receivers, of one kind or another, is essential to all life. David Lewis introduced a game theoretic model of the simplest case, where one sender and one receiver have pure common interest. How hard or easy is it for evolution to achieve information transfer in Lewis signaling?. The answers involve surprising subtleties. We discuss some if these in terms of evolutionary dynamics in both finite and infinite populations, with and without mutation

Emotions in litigation contests

This paper introduces the concept of emotions into the standard litigation contest. Positive (negative) emotions emerge when litigants win (lose) at trial and are dependent in particular on the level of defendant fault. Our findings establish that standard results of litigation contests change significantly when emotions are taken into account. We show that emotions may increase or decrease individual and total equilibrium contest effort, introduce an asymmetry into the contest, and reinforce or weaken a plaintiff's incentives to bring a suit. In addition, we consider how emotions impact on justice

Activity and inactivity in a rent-seeking contest with private information

We consider a rent-seeking contest in which one player has private information about his own valuation of the prize. This valuation may be either high or low. All other players have a known and identical valuation of the prize. We present necessary and sufficient conditions under which the privately informed player exerts a positive or zero equilibrium effort. Copyright Springer Science + Business Media, Inc. 2006