Schwarz, Hannah, Melanie Revilla, and Wiebke Weber. “Memory Effects in Repeated Survey Questions: Reviving the Empirical Investigation of the Independent Measurements Assumption”. Survey Research Methods 14, no. 3 (July 10, 2020): 325–344. Accessed April 24, 2024. https://ojs.ub.uni-konstanz.de/srm/article/view/7579.