@article{Gummer2018, author = "Tobias Gummer and Joss Roßmann and Henning Silber", title = "{Supplemental Material, Appendix - Using Instructed Response Items as Attention Checks in Web Surveys: Properties and Implementation}", year = "2018", month = "6", url = "https://sage.figshare.com/articles/journal_contribution/Supplemental_Material_Appendix_-_Using_Instructed_Response_Items_as_Attention_Checks_in_Web_Surveys_Properties_and_Implementation/6633311", doi = "10.25384/SAGE.6633311.v1" }