Table 1.
Overview of the experimental design with treatment labels.
Figure 1.
Average cooperation proportion per treatment and period.
The introductory period data for all groups were pooled in a single curve.
Table 2.
Overview of experimental results.
Figure 2.
Treatment effects on cooperation.
Average cooperation proportion per treatment with standard error bars.
Table 3.
ANOVA table on cooperation (individual averages).
Figure 3.
Treatment effects on participants’ profits.
(a) Average final profit per treatment with standard error bars. (b) Total profit per treatment as proportion of the optimum.
Table 4.
ANOVA table on participants’ final profits.