from otree.api import ( models, widgets, BaseConstants, BaseSubsession, BaseGroup, BasePlayer, Currency as c, currency_range ) doc = '\nThis is a standard 2-player trust game where the amount sent by player 1 gets\ntripled. The trust game was first proposed by\n\n Berg, Dickhaut, and McCabe (1995)\n.\n' class Constants(BaseConstants): name_in_url = 'trust' num_rounds = 1 players_per_group = None endowment = c(25) test_list = (0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10) instructions_template = 'trust/instructions.html' class Subsession(BaseSubsession): pass class Group(BaseGroup): sent_amount = models.CurrencyField(doc='Amount sent by P1', max=Constants.endowment, min=0) sent_back_amount = models.CurrencyField(doc='Amount sent back by P2', min=0) risk = models.IntegerField(initial=0, max=10) question2_a = models.IntegerField(max=10, min=0) question2_b = models.IntegerField(max=10, min=0) question2_c = models.IntegerField(max=10, min=0) def sent_back_amount_max(self): return self.sent_amount * Constants.multiplier def set_payoffs(self): p1 = self.get_player_by_id(1) p2 = self.get_player_by_id(2) p1.payoff = Constants.endowment - self.sent_amount + self.sent_back_amount p2.payoff = self.sent_amount * Constants.multiplier - self.sent_back_amount class Player(BasePlayer): risk = models.IntegerField(label='Disposition à prendre des risques', max=4) def role(self): return {1: 'A', 2: 'B'}[self.id_in_group]