Rehabilitation of areas of contaminated groundwater often involves significant costs for site investigation. Whether to undertake a site investigation and when to bring an ongoing investigation to a closure are question facing decision-makers at many contaminated sites acress north America.

People feel a sense of gratitude when they receive gifts, transfers, or assistance. Based on psychological literature, I argue that gratitude is different from standard notions of reciprocity. Indeed, people derive utility from in-kind transfers (i.e., feel grateful), even if they do not like or...

The Rational Addiction Model of Becker and Murphy (1988) has become a standard tool in the analysis of the demand for drugs, cigarettes, alcohol and other potentially addictive goods. In this paper, we shall argue that the success of the model has been more apparent than real, and that its...

The literature analyzing games where some players have private information about their "types" is usually based on the duality of "good" and "bad" types (GB approach), where "good" type denotes the type with better quality. In contrast, this paper analyzes a signalling game without types...