Using an Integrated Choice and Latent Variable Model to Understand the Impact of 'Professional' Respondents in a Stated Preference Survey

CERE Working Paper, 2019:3

28 Pages Posted: 8 May 2019

See all articles by Erlend Dancke Sandorf

Erlend Dancke Sandorf

Swedish University of Agricultural Sciences (SLU) - Center for Environmental and Resource Economics (CERE)

Lars Persson

University of Umea - Centre for Environmental and Resource Economics

Thomas Broberg

University of Umea - Centre for Environmental and Resource Economics

Date Written: April 9, 2019

Abstract

Internet panels are increasingly used for stated preference research, and members of such panels receive compensation for each completed survey. One concern is that over time this creates professional respondents who answer surveys to receive the monetary compensation. We identify professional respondents using data on panel tenure, survey response frequency, completion rates and total number of completed surveys. We find evidence of two types of professional respondents: "hyperactives" who answer surveys frequently and "experienced" who have long panel tenure and a large number of completed surveys. Using an integrated choice and latent variable model in a stated preference survey, we find that "hyperactive" respondents are less likely to choose the 'status quo' and have a more stochastic choice process as seen from the econometrician's point of view, whereas "experienced" respondents have a relatively more deterministic choice process. Our results show that "hyperactive" respondents significantly impact estimated values.

Keywords: Professional Respondents, Internet Panels, Discrete Choice Experiments, Integrated Choice and Latent Variable Model

JEL Classification: C35, Q51

Suggested Citation

Sandorf, Erlend Dancke and Persson, Lars and Broberg, Thomas, Using an Integrated Choice and Latent Variable Model to Understand the Impact of 'Professional' Respondents in a Stated Preference Survey (April 9, 2019). CERE Working Paper, 2019:3 . Available at SSRN: https://ssrn.com/abstract=3368948 or http://dx.doi.org/10.2139/ssrn.3368948

Erlend Dancke Sandorf (Contact Author)

Swedish University of Agricultural Sciences (SLU) - Center for Environmental and Resource Economics (CERE)

Department of Economics
Umeå, 901 87
Sweden

Lars Persson

University of Umea - Centre for Environmental and Resource Economics ( email )

Umeå, S-901 87
Sweden

Thomas Broberg

University of Umea - Centre for Environmental and Resource Economics ( email )

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