In this paper, we assume that contributing to a charitable organisation (CO) brings some “joy of giving” (or “warm glow”) only if the organisation’s ideological values are close to those of the donor. We also assume that creating a CO entails set-up costs. Thus more CO generates more...

This paper reviews in a non-technical presentation some of the theoretical foundations of the Porter Hypothesis that argues that strict environmental regulations may increase the profits of industries that have to respect them. After a short presentation of the hypothesis, some of the arguments...