. . . . . "4.21244E-1"^^ . "1.72E2"^^ . "3.00305E-2"^^ . "1.32135E-2"^^ . "https://data.cooperationdatabank.org/vocab/prop/expectationsLevel" . "John M. Sivacek" . "Lawrence A. Mess?" . "1979-01-01"^^ . . . "0.0E0"^^ . "172"^^ . "172"^^ . "4.24E-1"^^ . . . . . "2"^^ . "4.66667E-1"^^ . . "2"^^ . . "1978"^^ . "Published Article" . "Prisoner's Dilemma Game" . "Lab" . "Monetary" . "Stranger" . "One-shot" . . "2020-12-17T00:08:07.883Z"^^ . . . . "2020-12-01T00:00:00.000Z"^^ . .