Value estimates for environmental goods can be obtained by either estimating preference parameters as revealed through behavior related to some aspect of the amenity or using stated information concerning preferences for the good. In the environmental economics literature the stated preference...

In public good games, voluntary contributions tend to start off high and decline as the game is repeated. If high contributors are matched, however, contributions tend to stay high. We propose a formalization predicting that high contributors will self-select into groups committed to charitable...