The article focused on cost effectiveness of HIV/AIDS prevention strategies in Nigeria. It was designed as a case study. Data were sourced from the Anambra State Agency for HIV/AIDS prevention in Awka and the centres for HIV/AIDS prevention established by NGOs in 2 Awka, Onitsha, and Nnewi. Data...

Like many other areas of law, the development of environmental law has been strongly influenced by notions of fairness. This should not be surprising, since environmental law has been developed by lawyers, who are self-selected to be fairness-oriented and trained to think in terms of fairness....

The paper analyzes quantity competition in economies in which a network describes the set of feasible trades. A model is presented in which the identity of buyers, of sellers, and of intermediaries is endogenously determined by the trade flows in the economy. The analysis first considers small...

This paper develops a simple model to examine the interaction between partner choice and individual behavior in games of coordination. An important ingredient of our approach is the way we model partner choice: we suppose that a player can establish ties with other players by unilaterally...

We study an infinite horizon game in which pairs of players connected in a network are randomly matched to bargain over a unit surplus. Players who reach agreement are removed from the network without replacement. The global logic of efficient matchings and the local nature of bargaining, in...

We use a simple balanced budget contest to collect taxes on a private good in order to ?nance a pure public good. We show that-with an appropriately chosen structure of winning probabilities-this contest can provide the public good efficiently and without distorting private consumption. We...

We use a simple balanced budget contest to collect taxes on a private good in order to finance a pure public good. We show that-with an appropriately chosen structure of winning probabilities-this contest can provide the public good efficiently and without distorting private consumption. We...

We use a simple balanced budget contest to collect taxes on a private good in order to ?nance a pure public good. We show that-with an appropriately chosen structure of winning probabilities-this contest can provide the public good efficiently and without distorting private consumption. We...

This paper shows that implicit assumptions about the numeraire good in the Kaldor-Hicks efficiency-equity analysis involve a "same-yardstick" fallacy (a fallacy pointed out by Paul Samuelson in another context). These results have negative implications for cost-benefit analysis, the...

We establish that the fraction of preference profiles for which the random serial dictatorship allocation is ordinally efficient vanishes for allocation problems with many object types. We consider also a probabilistic setting where in expectation agents have moderately similar preferences...