“…See surveys byFrey and Stutzer (2002),Helliwell and Putnam (2004),Clark et al (2008),Diener (2012),Clark (2018), andDiener et al (2018).2 See e.g Inglehart and Klingemann (2000),Veenhoven (2000),Frey and Stutzer (2002),Inglehart et al (2008),Gehring (2013),Graafland and Compen (2015),Spruk and Kesšeljević (2016),Jackson (2017). andNakazato et al (2017).…”