from otree.api import * c = cu doc = '' class C(BaseConstants): NAME_IN_URL = 'Trust_game' PLAYERS_PER_GROUP = 2 NUM_ROUNDS = 1 ENDOWMENT = cu(10) MULTIPLICATION_FACTOR = 3 PROLIFIC_ID = 0 class Subsession(BaseSubsession): pass class Group(BaseGroup): sent_amount = models.CurrencyField(label='How much do you want to send by participant B?', max=C.ENDOWMENT) sent_back_amount = models.CurrencyField(label='How much do you want to send back?') def sent_back_amount_choices(group: Group): return currency_range(0,group.sent_amount*C.MULTIPLICATION_FACTOR,1) def set_payoffs(group: Group): p1=group.get_player_by_id(1) p2=group.get_player_by_id(2) p1.payoff=C.ENDOWMENT-group.sent_amount+group.sent_back_amount p2.payoff=group.sent_amount*C.MULTIPLICATION_FACTOR-group.sent_back_amount class Player(BasePlayer): ID_prolific = models.LongStringField(label='What is your prolific ID ?') age = models.IntegerField(label='What is your age ?') class Page_age(Page): form_model = 'player' form_fields = ['age'] class Send_page(Page): form_model = 'group' form_fields = ['sent_amount'] @staticmethod def is_displayed(player: Player): group = player.group return player.id_in_group==1 class WAITFORP1(WaitPage): pass class Send_back(Page): form_model = 'group' form_fields = ['sent_back_amount'] @staticmethod def is_displayed(player: Player): group = player.group return player.id_in_group==2 @staticmethod def vars_for_template(player: Player): group = player.group return dict(triple_amount=group.sent_amount*C.MULTIPLICATION_FACTOR) class RESULTSWAITPAGE(WaitPage): after_all_players_arrive = set_payoffs class RESULTS(Page): form_model = 'player' class PROLIFIC_page(Page): form_model = 'player' form_fields = ['ID_prolific'] class Completion_code_page(Page): form_model = 'player' page_sequence = [Page_age, Send_page, WAITFORP1, Send_back, RESULTSWAITPAGE, RESULTS, PROLIFIC_page, Completion_code_page]