Researchers using questionnaires to elicit preferences must decide whether to include response options that allow respondents to express "no opinion." Using a split-sample design, we explore the implications of alternative answer formats including and not including no-opinion responses in an...

We conduct a benefit-cost analysis of a relicensing agreement for two hydroelectric dams in Michigan. The agreement changed daily conditions from peaking to run-of-river flows. We consider three categories of costs and benefits: producer costs of adapting electricity production to the new time...