Protocol for a web survey experiment studying the feasibility of asking respondents to capture and submit photos of the books they have at home and the resulting data quality.

This document presents the protocol of a study conducted as a part of the WEB DATA OPP project, which is funded by the H2020 program. The study aimed to investigate different aspects of the collection of images through web surveys. To do this, we implemented a mobile web survey in an opt-in online panel in Spain. The survey had various questions, some of which were about the books that the participants have at their main residence. The questions related to books were asked in three different ways: regular survey questions showing visual examples of how different numbers of books fit in a 74 centimetre wide shelf depending on their thickness, regular survey questions without the visual examples, and questions where participants were asked to send photos of the books at their home. This report explains how the study was designed and conducted. It covers important aspects such as the experimental design, the questionnaire used, the characteristics of the participants, ethical considerations, and plans for disseminating the results. This document presents the protocol of our study asking respondents for information about the books they have at home. This information was solicited through conventional types of questions (

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Copyright: © 2023 Iglesias PA et al.

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Competing interests: Patricia A. Iglesias and Melanie Revilla are also authors of the tool used in this survey for image collection, called WebdataVisual (details available in the “Software availability” section). WebdataVisual is openly available for public use, and the authors do not receive any financial compensation or benefits from third-party utilization of the tool.