. . . . . "-1.07293E-1"^^ . "8.4E1"^^ . "5.92526E-2"^^ . "2.65591E-2"^^ . "https://data.cooperationdatabank.org/vocab/prop/gender" . "Robert A. Karlin" . "Yakov M. Epstein" . "1975-03-01:00"^^ . . . "5.5E1"^^ . "1.8E1"^^ . "5.0E-1"^^ . "84"^^ . "84"^^ . "4.28E-1"^^ . . . . . "2"^^ . "5.0E-1"^^ . . "2"^^ . . "1975"^^ . "Published Article" . "Prisoner's Dilemma Game" . "Lab" . "Hypothetical" . "Partner" . "Repeated" . . "2020-12-16T23:44:26.195Z"^^ . . . . "2020-12-01T00:00:00.000Z"^^ . .