. If more investors invest at the same time, they share the costs. In the communication treatment, subjects can freely … communicate before choosing the investment time. We find that in groups of two players, communication increases cooperation and …

This paper proposes an alternative, dynamic framework for estimatingtime-varying values of travel time savings and … values of schedule delay, in whichtime-preferences are represented as the time-varying excess willingness to pay(EWPT) to … being in the one location, over being elsewhere. It is shown how theconventional linear model, with time-independent values …

a wild organism with a certain quality at a point in time then it will never use this same organism at a subsequent … point in time. Second, we show that if our PF uses a particular organism with its quality at a point in time then it will co … ntinue to produce the drug with the chemicals from this organism at all later points in time. Third, we show that there is a …