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Did a bot eat your homework? An assessment of the potential impact of bad actors in online administration of preference surveys
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Did a bot eat your homework? An assessment of the potential impact of bad actors in online administration of preference surveys
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Journal Article
Did a bot eat your homework? An assessment of the potential impact of bad actors in online administration of preference surveys
2023
Overview
Online administration of surveys has a number of advantages but can also lead to increased exposure to bad actors (human and non-human bots) who can try to influence the study results or to benefit financially from the survey. We analyze data collected through an online discrete-choice experiment (DCE) survey to evaluate the likelihood that bad actors can affect the quality of the data collected. We developed and fielded a survey instrument that included two sets of DCE questions asking respondents to select their preferred treatments for multiple myeloma therapies. The survey also included questions to assess respondents' attention while completing the survey and their understanding of the DCE questions. We used a latent-class model to identify a class associated with perverse preferences or high model variance, and the degree to which the quality checks included in the survey were correlated with class membership. Class-membership probabilities for the problematic class were used as weights in a random-parameters logit to recover population-level estimates that minimizes exposure to potential bad actors. Our results highlight the need for a robust discussion around the appropriate way to handle bad actors in online preference surveys. While exclusion of survey respondents must be avoided under most circumstances, the impact of \"bots\" on preference estimates can be significant.
Publisher
Public Library of Science,Public Library of Science (PLoS)
Subject
