“…For example, improved monitoring to allow payments to vary with individual contributions has been suggested as a means for addressing the nonpoint source pollution problem (e.g.,Xepapadeas 2011, Palm-Forster, et al 2019, Balmford et al 2021. Policies that allow firms to avoid the negative consequences of group failures through their individual effort have also been used to reduce greenhouse gas emissions (e.g.,Dijkstra & Rübbelke 2013). For studies comparing individual versus collective payments, seeNarloch et al (2012),Midler et al (2015),Gatiso et al (2018), andMoros et al (2019).6 For general discussions of tournaments and related contests, see, e.g.,Lazear & Rosen (1981),Holmstrom (1982),Nalbantian & Schotter (1997),Prendergast (1999),Che &Yoo (2001), andConnelly et al (2014).…”