RT Journal Article SR Electronic T1 Split-Sample Tests of “No Opinion” Responses in an Attribute-Based Choice Model JF Land Economics JO Land Econ FD University of Wisconsin Press SP 348 OP 362 DO 10.3368/le.85.2.348 VO 85 IS 2 A1 Fenichel, Eli P. A1 Lupi, Frank A1 Hoehn, John P. A1 Kaplowitz, Michael D. YR 2009 UL http://le.uwpress.org/content/85/2/348.abstract AB 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 attribute-based choice experiment. The results indicate that using multiple no-opinion responses may enable researchers to differentiate between respondents who choose no-opinion options due to satisficing and those expressing utility indifference. Existing literature suggests no-opinion responses may be treated as “no,” but our results show treating no-opinion responses as “no” can yield substantially disparate preference estimates. (JEL C25, Q24, Q25, Q51)