The article proposes a research program to compare game forms in terms of their ability to govern ex post adjustments to ex ante contracts. The comparisons can be based on direct implementation-costs or the extent to which desirable adjustments are not implemented. In several examples of the...

Considering a principal-agent model in which the difficulty of the agent's action is better known ex interim than ex ante, we compare two contracting regimes; one with commitment to an ex ante negotiated contract, and one with an ex interim negotiated contract. The ex ante contract can not have...

The article proposes a research program to compare game forms in terms of their ability to govern ex post adjustments to ex ante contracts. The comparisons can be based on direct implementation-costs or the extent to which desirable adjustments are not implemented. In several examples of the...