“…For instance, in a prisoner's dilemma, students cooperate less than white‐collar workers (Bigoni, Casari, and Camera ) or bicycle messengers (Burks, Carpenter, and Goette ). Similarly, students are less prosocial than rural and urban citizens in a public good game (Gächter and Herrmann ), than rural villagers in the appropriation of common‐pool resources (Cardenas ), and than employees in a dictator game (Carpenter, Burks, and Verhoogen ; Dragone, Galeotti, and Orsini ). The gap remains when one compares students and professionals , that is self‐selected subjects with a high degree of expertise who ordinarily deal with situations resembling the experimental task.…”