. . . . . "-3.41294E-1"^^ . "4.0E1"^^ . "1.27598E-1"^^ . "5.64796E-2"^^ . "https://data.cooperationdatabank.org/vocab/prop/symmetric" . "Brian MacLean" . "Paul G. Swingle" . "1971-12-01:00"^^ . . . "1.0E0"^^ . "60"^^ . "60"^^ . "3.82E-1"^^ . . . . . "2"^^ . "3.75E-1"^^ . . "2"^^ . . "1971"^^ . "Published Article" . "Prisoner's Dilemma Game" . "Lab" . "Monetary" . "Partner" . "Repeated" . . "2020-12-17T00:28:16.398Z"^^ . . . . "2020-12-01T00:00:00.000Z"^^ . .