title: Investigating heterogeneity in the characterization of risks using best worst scaling.
abstract: This research proposes and implements a new approach to the elicitation and analysis of perceptions of risk. We use best worst scaling (BWS) to elicit the levels of control respondents believe they have over risks and the level of concern those risks prompt. The approach seeks perceptions of control and concern over a large risk set and the elicitation method is structured so as to reduce the cognitive burden typically associated with ranking over large sets. The BWS approach is designed to yield strong discrimination over items. Further, the approach permits derivation of individual-level values, in this case of perceptions of control and worry, and analysis of how these vary over observable characteristics, through estimation of random parameter logit models. The approach is implemented for a set of 20 food and nonfood risks. The results show considerable heterogeneity in perceptions of control and worry, that the degree of heterogeneity varies across the risks, and that women systematically consider themselves to have less control over the risks than men.
authors: Department of Health Sciences, University of York, UK.
authors: Seda
authors: S
authors: Erdem
authors: Dan
authors: D
authors: Rigby
mesh_terms: D000328:Adult; D005260:Female; D005506:Food Contamination / Q000032:analysis*; D005516:Food Microbiology / Q000379:methods*; D006801:Humans; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D010465:Perception; D011336:Probability; D011639:Public Opinion; D012306:Risk; D018570:Risk Assessment / Q000379:methods*; D012424:Rural Population; D011795:Surveys and Questionnaires; D006113:United Kingdom; D014505:Urban Population
keywords: Best worst scaling; food pathogens; heterogeneity; novel technology; risk perception