. . . . . "6.49372E-2"^^ . "3.3E1"^^ . "1.4776E-1"^^ . "6.69147E-2"^^ . "https://data.cooperationdatabank.org/vocab/prop/symmetric" . . . "6.12E-1"^^ . "49"^^ . "49"^^ . "5.34E-1"^^ . . . . "2"^^ . . "2"^^ . . "1997"^^ . "Published Article" . "Prisoner's Dilemma Game" . "Lab" . "Partner" . "Repeated" . . "2020-12-17T00:08:56.504Z"^^ . . . . "2020-12-01T00:00:00.000Z"^^ . .