Fig. 1

Price offers in the second game, split by price group and role. Confidence intervals: 95%. Rounds marked with “x”: mean price offer significantly different between roles at p < 0.05, hence no trade possible. Left side: inconsistent price offers (<WTA or  > WTP) excluded for each round separately. Right side: only participants with consistent offers in all rounds (players with one or more inconsistent offer excluded from all rounds) and correct answer to attention screening question