. . . . . "3.56504E-1"^^ . "4.0E1"^^ . "1.33779E-1"^^ . "5.78314E-2"^^ . "https://data.cooperationdatabank.org/vocab/prop/gameIncentive" . "https://data.cooperationdatabank.org/vocab/prop/showUpFee" . "Morton Deutsch" . "Peter Gumpert" . "Yakov Epstein" . "1969-01-01:00"^^ . . . "100"^^ . "100"^^ . "3.57E-1"^^ . . . . . . "2"^^ . "5.0E-1"^^ . . "2"^^ . . "1968"^^ . "Published Article" . "Prisoner's Dilemma Game" . "Lab" . "Hypothetical" . "Monetary" . "Partner" . "Repeated" . . "2020-12-16T23:52:08.831Z"^^ . . . . "2020-12-01T00:00:00.000Z"^^ . .