“…As some key principles underlying the effect of nudging and behavioral economics, prior work demonstrates classic effects such as status quo effect (e.g., setting organ donation as a default leads to significantly higher donation rates compared with when the default is to not donate; Johnson and Goldstein, 2003), endowment effect (e.g., pre-owning an option increases valuation of the option; Kahneman et al, 1991;Thaler, 1980), sunk-cost effect (e.g., people hold on to losing stocks because of sunk cost; or they visit the gym more frequently when sunk cost is salient; Gourville and Soman, 2002;Thaler, 1985), availability and salience heuristics (e.g., making the desirable option more salient to increase adoption of online service instead of the more costly on site visit; Castelo et al, 2015;Tversky and Kahneman, 1974), anchoring effect (e.g., using a random number in the decision context as an anchor for price; referring to social norm as an anchoring point to encourage green behavior; Ariely et al, 2003;Tversky and Kahneman, 1974), and the simplicity effect (e.g., using traffic light imagery to highlight (un)healthiness of food and nudge healthy eating, or using green and red "lights" to indicate water (over)usage and reduce utility cost; Ly et al, 2013).…”