. . . . . "0.0E0"^^ . "9.6E1"^^ . "5.2108E-2"^^ . "2.32979E-2"^^ . "https://data.cooperationdatabank.org/vocab/prop/communicationOptional" . "Howard Rosenthal" . "Nilanjan Roy" . "Thomas Palfrey" . "2017-01-01:00"^^ . . . "183"^^ . "183"^^ . "4.38E-1"^^ . . . . . "3"^^ . . "2"^^ . . "2015"^^ . "Published Article" . "Public Goods Game" . "Lab" . "Monetary" . "Stranger" . "One-shot" . . "2020-12-17T00:13:46.580Z"^^ . . . . "2020-12-01T00:00:00.000Z"^^ . .