“…Similarly, incentives to increase response rates on telephone surveys under different circumstances were also studied (Gunn and Rhodes, 1981;Singer et al, 2000;Knoll et al, 2012) with varying results. Recently, with the advent of internet survey tools, such experiments were conducted on web-based surveys as well (Cobanoglu and Cobanoglu, 2003;Porter and Whitcomb, 2003;Deutskens et al, 2004;Goritz, 2006;Sánchez-Fernández et al, 2010;Dykema et al, 2012;Kennedy and Ouimet, 2014;Meuleman et al, 2018;Coryn et al, 2020;Stanley et al, 2020;Knowles and Stahlmann-Brown, 2021). However, studies on increasing response rate and data quality in face-to-face interviews are relatively scant, especially for a committed lottery incentive.…”