We model networks of relational (or implicit)contracts, exploring how sanctioning power and equilibrium conditions change under different network configurations and information transmission technologies. In our model, relations are the links, and the value of the network lies in its ability to...

Most of the literature on monetary policy delegation assumes that the government can credibly commit to the delegation contract, an assumption criticized by McCallum. This paper provides foundations for the assumption that renegotiating a delegation contract can be costly by illustrating how...

We model the impact of bank mergers on loan competition, banks' reserve holdings and aggregate liquidity. Banks compete in a differentiated loan market, hold reserves against liquidity shocks, and refinance in the interbank market. A merger creates an internal money market that induces financial...

This study has been commissioned by the Competition Directorate- General of the European Commission (from hereon DG Competition) to develop “a detailed methodological approach for the ex-post review of European Commission decisions in the field of merger control, namely for assessing the...

This Paper, a thorough revision of Spagnolo (1996), addresses the following questions: What is the optimal design for a set of self-enforcing international policy agreements? How many and which issues should each agreement regulate? Are GATT’s constraints on issue linkage (cross-retaliation)...

We model a new effect of exclusivity on non-contractible investments in buyer/seller relationships. By restricting the buyer to purchase from only one seller, exclusivity increases the buyer’s costs of haggling during renegotiation and hence the seller’s relative bargaining power and...

We model the impact of bank mergers on loan competition, reserve holdings and aggregate liquidity. A merger creates an internal money market that affects reserve holdings and induces financial cost advantages, but also withdraws liquidity from the interbank market. We assess changes in liquidity...