Schäffer, Klaudia; Král, Adrienn; Kun, Ádám - In: Games 16 (2025) 3, pp. 1-21
: unconditional cooperator (1.5%), unconditional free rider (10.6%), perfect conditional cooperator (42.6%), hump-shaped contributor … (0.7%), V-shaped contributor (0.4%), conditional cooperator (16.6%), conditional free rider (13.6%), conditional … at least matches others' contribution, and call everyone consistently offering less a free rider. Furthermore, we found …