I'm putting together a public goods game with treatments which involve both within and between group competition. I've been trying to figure out how to access and display each subject's / team's relative contributions to each participant intermittently between rounds. Does anyone have experience with something similar or have any ideas about how to do it?

Thank you for your help,
Erik

Hi Erik

I'd suggest you use participant variables / fields: https://otree.readthedocs.io/en/latest/rounds.html#participant-fields

If you have a value that is the same for each player in the group and you are in a group function, you can store it like this:

def some_group_function(group)
    for p in group.get_players()
        player.participant.vars['your_variable'] = value

Thank you Daniel, your bit of code is very helpful, I think that I'm starting to understand the structure. I am trying to avoid using the participant fields though so that I don't mix things up across treatments/apps, if my understanding is correct.

Do you happen to know if I can access a player's contribution, for example from a specific round with something like:

under group, defining a function that includes the following:

players_in_round = self.in_round(1).get_players()
round_contributions = [p.contribution for p in players_in_round]
highest_cont = max(self.round_contributions)
for p in self.players_in_round:
    if p.round_contributions == highest_cont
       p.hi_contributor = 1
    else:
       p.hi_contributor = 0
highest_contibutors = [p.id_in_group for p in players if p.hi_contributors == 1]

I'm not sure, but I think your first line does not work: get_players() returns a list of all players in the group, and it cannot select a specific round (I think).

Try this:

all_players = self.get_players()
round_contributions = [p.in_round(1).contribution for p in all_players]

and leave the rest.

Btw, are you using oTree Lite that you wrote self in your code?

If yes, I'd suggest you upgrade to oTree 5 if possible, it's so much cleaner :)

Best,
Daniel

Addition: The if-condition should be changed as well:

for p in self.all_players:
    if p.in_round(1).contribution == highest_cont:
        p.hi_contributor = 1
    else:
        p.hi_contributor = 0