Conrad, Frederick, Roger Tourangeau, Mick Couper, and Chan Zhang. “Reducing Speeding in Web Surveys by Providing Immediate Feedback”. Survey Research Methods 11, no. 1 (April 10, 2017): 45-61. Accessed August 12, 2022. https://ojs.ub.uni-konstanz.de/srm/article/view/6304.