Although ambiguity has received ample attention in the theoretical expected-utility literature, measures of ambiguity are rare. Here, I present a framework for eliciting and estimating risk and ambiguity simultaneously using a risk ladder. The model, based on a variant of the...

This article takes a fresh look at how public uncertainty influences willingness to pay (WTP) for climate-change mitigation programs. I elicit subjective distribution functions over future global mean temperatures and WTP for mitigation. I find, not surprisingly, that subjects, on average, view...

Using a quasi-field experiment, we report on subjects' perceptions of the risks of hurricanes. All experimental subjects were displaced by either Hurricane Katrina or Rita, in New Orleans and other Gulf Coast areas, except for a small control group consisting of people who live in central Texas....

This paper investigates whether preferences over environmental risks are best modeled using probability-weighted utility functions or can be reasonably approximated by expected utility (EU) or subjective EU models as is typically assumed. I elicit risk attitudes in the financial and...