An important methodological issue in stated-preference (SP) experiments is the inclusion and format of an opt-out option. A split-sample design is used in a saltwater angling SP survey to test how including a "no-trip" option influences attribute salience relative to an option that allows...

This paper reports on results for a graded-pair comparison questionnaire where respondents rate pairs of Pacific Northwest salmon preservation options. Each of the preservation options includes the number of jobs lost and the level of salmon preserved. Ordered-probit analysis is used to estimate...