Supplemental Material, Appendix - Using Instructed Response Items as Attention Checks in Web Surveys: Properties and Implementation Tobias Gummer Joss Roßmann Henning Silber 10.25384/SAGE.6633311.v1 https://sage.figshare.com/articles/journal_contribution/Supplemental_Material_Appendix_-_Using_Instructed_Response_Items_as_Attention_Checks_in_Web_Surveys_Properties_and_Implementation/6633311 <p>Supplemental Material, Appendix for Using Instructed Response Items as Attention Checks in Web Surveys: Properties and Implementation by Tobias Gummer, Joss Roßmann, and Henning Silber in Sociological Methods & Research</p> 2018-06-12 12:00:00 attention checks instructed response items grid questions measurement error data quality web surveys