We show in a public goods experiment on three continents that conditional cooperation is a universal behavioral regularity. Yet, the number of conditional cooperators and the extent of conditional cooperation are much higher in the U.S.A. than anywhere else. -- conditional cooperation ; public...

It is still an ongoing discussion whether benefits resulting from reduced mortality risk should be valuated differently, depending on the age of the beneficiaries. Theory suggests that the influence of age on the value of statistical life (VSL), which is a monetary measure for reduced/prevented...