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Selection in Surveys: Using Randomized Incentives to Detect and Account for Nonresponse Bias

Deniz Dutz et al.

The Review of Economic Studies2026https://doi.org/10.1093/restud/rdag003article
FT50AJG 4*ABDC A*
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Abstract

We show how to use randomized participation incentives to test and account for nonresponse bias in surveys. We first use data from a survey about labour market conditions, linked to full-population administrative data, to provide evidence of large differences in labour market outcomes between survey participants and nonparticipants, differences which would not be observable to an analyst who only has access to the survey data. These differences persist even after correcting for observable characteristics. We then use the randomized incentives in our survey to directly test for nonresponse bias and find evidence of substantial bias. Next, we apply a range of existing methods that account for nonresponse bias and find they produce bounds (or point estimates) that are either wide or far from the ground truth. We investigate the failure of these methods by taking a closer look at the determinants of participation, finding that the composition of participants changes in opposite directions in response to incentives and reminder emails. We develop a model of participation that allows for two dimensions of unobserved heterogeneity in the participation decision. Applying the model to our data produces bounds (or point estimates) that are narrower and closer to the ground truth than the other methods. Our results highlight the benefits of including randomized participation incentives in surveys. Both the testing procedure and the methods for bias adjustment may be attractive tools for researchers who are able to embed randomized incentives into their survey.

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https://doi.org/https://doi.org/10.1093/restud/rdag003

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@article{deniz2026,
  title        = {{Selection in Surveys: Using Randomized Incentives to Detect and Account for Nonresponse Bias}},
  author       = {Deniz Dutz et al.},
  journal      = {The Review of Economic Studies},
  year         = {2026},
  doi          = {https://doi.org/https://doi.org/10.1093/restud/rdag003},
}

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Selection in Surveys: Using Randomized Incentives to Detect and Account for Nonresponse Bias

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F · citation impact0.50 × 0.4 = 0.20
M · momentum0.50 × 0.15 = 0.07
V · venue signal0.50 × 0.05 = 0.03
R · text relevance †0.50 × 0.4 = 0.20

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