“…Public policy and social influence both regulate behavior. For instance, smoking behavior appears to be responsive both to public policy (e.g., Hamilton, Biener, & Brennan, 2008; Thrasher, Pérez-Hernández, Swayampakala, Arillo-Santillán, & Bottai, 2010; Waddell, Farley, Mandel-Ricci, & Kansagra, 2014) and to social influence (e.g., Shor & Williams, 1978; Vitória, Salgueiro, Silva, & De Vries, 2009; Wiium, Torsheim, & Wold, 2006). However, public policy and social influence relate to different human goals, and should have unique effects on behavior.…”