“…Among the quantitative studies that do not rely on survey methods, we find some studies that use natural variation designs/field experiments (Fahsing & Ask, 2016;Holmberg, 2005;Jørgensen, 2010;Pedersen, 2013;Phelps, Strype, Le Bellu, Lahlou, & Aandal, 2016) and some that use register data (J. Y. Dahl & Lomell, 2016;Kruize, 2001;Lindström, 2011;Shannon, 2008;Skardhamar, Fekjaer, & Pedersen, 2016;Winnaess & Helland, 2014).…”