. . . . . "-5.54133E-1"^^ . "4.1E1"^^ . "1.33073E-1"^^ . "5.69709E-2"^^ . "https://data.cooperationdatabank.org/vocab/prop/ethnicityUS" . "https://data.cooperationdatabank.org/vocab/prop/heterogeneousEthnicity" . "Michael Hemesath" . "Xun Pomponio" . "1998-05-01:00"^^ . . . "30"^^ . "30"^^ . "3.77E-1"^^ . . . . . "2"^^ . "5.0E-1"^^ . . "2"^^ . . "1996"^^ . "Published Article" . "Prisoner's Dilemma Game" . "Class" . "Monetary" . "Stranger" . "One-shot" . . "2020-12-16T23:54:53.037Z"^^ . . . . "2020-12-01T00:00:00.000Z"^^ . .