Figure 1.
Histogram of donations Player 1 gave to Player 2 across Experiment 1 and Experiment 2.
Data from control treatments are not shown. Red columns are data from players who saw the $0.20 target amount; blue columns are data from players who saw the $0.50 target amount.
Figure 2.
Numbers of Player 1 who complied with the norm to give (a) at least $0.20 or (b) at least $0.50 to Player 2 according to the type of norm information that was used in the instructions.
Control data are those where no norm information was shown.
Table 1.
GLM to investigate factors affecting probability that Player 1 would comply with the ‘give $0.20’ norm.
Table 2.
GLM to investigate factors affecting probability that Player 1 would comply with the ‘give $0.50’ norm.
Table 3.
Estimates, standard errors and confidence intervals for parameters included in the top models investigating factors affecting compliance with the ‘give $0.50’ norm.
Table 4.
GLM to investigate factors affecting mean donation made by Player 1.
Table 5.
Estimates, unconditional standard errors, confidence intervals and relative importance for parameters included in the top models for Table 4.
Table 6.
GLM to investigate factors affecting probability that Player 1 would give nothing to Player 2.
Table 7.
Estimates, unconditional standard errors, confidence intervals and relative importance for parameters included in the top models for Table 6.