attitudes and beliefs. We measure cooperative attitudes using the incentive-compatible strategy method by Fischbacher et al …. (2001, Economics Letters, 71-3, 397–404)(FGF). However, to keep the incentives in the strategy method equal across all group … sizes (which FGF does not), we also compare FGF with a version of the strategy method that is scalable to any group size. We …

should elicit their strategy at the beginning of each super game using the strategy method in the last five rounds. We found …

should elicit their strategy at the beginning of each super game using the strategy method in the last five rounds. We found …