“…Researchers tested the effectiveness of various modifications in the choice environments in several domains, such as transport (e.g., Gaker, Zheng, & Walker, 2010), financial decision making (e.g., Evans, Dillon, Goldin, & Krueger, 2011), public health (Li & Chapman, 2013;Darzi, 2016), andsustainability (e.g., Baca-Motes, Brown, Gneezy, Keenan, &Nelson, 2013). For example, in a research project on sustainable energy use, 40,000 German households were asked whether they would purchase their energy from renewable sources for a slightly higher price or not (Ebeling & Lotz, 2015).…”