Doctor of Philosophy, The Ohio State University, 2024, Agricultural, Environmental and Developmental Economics
Stated preference (SP) methods such as Contingent Valuation (CV) and Discrete Choice Experiment (DCE) appear widely across disciplines to estimate the economic value for both market and non-market goods/services. To ensure the validity and reliability of SP studies, one key assumption is that respondents' stated decisions can truthfully reflect their underlying preferences in a consistent and stable manner. However, this assumption can be violated by the existence of hypothetical bias (HB) often associated with a hypothetical choice environment, as well as ordering effects (Penn and Hu, 2018; Day et al., 2012).
HB describes the divergence between individuals' responses in hypothetical valuations, often in the form of a survey, and revealed behaviors in the real market. One reason HB can take place is when there are no actual payment consequences, some respondents may not feel obligated to answer the survey questions seriously, and sometimes they may even behave strategically to influence the outcome of the survey. We refer to these responses as unqualified as the respondents deviate from the survey instructions. Researchers typically disqualify these responses from entering the final data for analysis. However, there are many types of unqualified responses. Subsequently, two issues may follow. First, a universal approach to purging all possible unqualified responses does not exist. Second, given a specific type of unqualified behavior, there is rarely agreement on what the threshold researchers need to rely on to define what responses are unqualified. Therefore, the first chapter explores the overlaps between three common types of disqualifying behavior (protest, inconsequentiality, and inattention) to see whether such overlaps are large enough thus enabling one common measure to clean all three types of unqualified responses. This chapter further examines whether different combinations from different definitions or thresholds used to capture unqualified response (open full item for complete abstract)
Committee: Wuyang Hu (Advisor); H. Allen Klaiber (Committee Member); Jerrod Penn (Committee Member); Brent Sohngen (Committee Member); Brian Roe (Committee Member)
Subjects: Agriculture; Economics; Environmental Economics