Impact of the mode of data collection on the quality of survey questions depending on respondents’ characteristics

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  • Resum

    The Internet is more and more used to conduct surveys. However, moving from traditional modes of data collection to the Internet may threaten the comparability of the data if the mode has an impact on the way of answering of the respondents. In previous research, Revilla and Saris (2010) find similar average quality (defined as the product of reliability and validity) for several survey questions when asked in a face-to-face interview and when asked online. But does that mean that the mode of data collection does not have an impact on the quality? Or may it be that for some respondents the quality is higher in Web surveys whereas for others it is lower, such that in average the quality for the complete sample is similar? Comparing the quality for different groups of respondents of a face-to-face and a Web survey, no significant impact on the quality of the background characteristics, the mode and the interaction between them are found.
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