“…: . A number of examples have been found by ethologists in nature whereby several species display punishment providing the individuals with an option to attempt increasing their own fitness (Clutton-Brock and Parker, 1995), but whether or not this behaviour prompts a higher use of cooperation or, rather, retaliation is still a question open to debate in humans and other species (Baldassarri and Grossman, 2011;Balliet et al, 2011;Baumard, 2010;Bone et al, 2016;Boyd et al, 2010;Dong et al, 2019;Fehr and Gachter, 2002;Fehr and Schurtenberger, 2018;Fowler et al, 2005;Gächter et al, 2008;Gao et al, 2015;Hilbe et al, 2014;Janssen and Bushman, 2008;Li et al, 2018;Nikiforakis, 2008;Raihani and Bshary, 2015;Raihani et al, 2012;Riehl and Frederickson, 2016;Wubs et al, 2016).…”