Publication Type: Book Chapter Publication date: 1 June 2019 Series: Experimental methods in survey research: techniques that combine random sampling with random assignment DOI: https://doi.org/10.1002/9781119083771.ch19 AuthorsSandra Walzenbach Katrin Auspurg Thomas Hinz EditorsPaul J. Lavrakas , Michael W. Traugott , Courtney Kennedy , Allyson L. Holbrook , Edith de Leeuw , Brady T. West SubjectsSurveys Survey Methodology