In many tournaments investments are made over time and conducting a review only once at the end, or also at points midway through, is a strategic decision of the tournament designer. If the latter is chosen, then a rule according to which the results of the different reviews are aggregated into...

We analyse incentive problems in team and partnership structures where the only available information to condition a contract on is some noisy ranking of the partners' efforts. This enables us to ensure both first best efficient effort levels for all partners and the redistribution of output...