Fig. 2
Advantageous inequality aversion (β) under different time conditions. Higher β indicates stronger pro-sociality. Each dot represents one subject’s degree of pro-sociality (β), comparing a time-free and time-pressure conditions, b time-delay and time-free conditions, and c time-delay and time-pressure conditions. Notice that subjects to the left of the vertical red line (split by the median indifference β, selfish subjects) are consistently shifted downwards while those to the right (pro-social subjects) are consistently shifted upwards. The number of subjects (NS) in the experiment was 102. 12 subjects whose βf is outside of (−1, 2), 26 subjects whose βp is outside of (−1, 2), and 8 subjects whose βd is outside of (−1, 2) are not shown but were included in the statistical analyses. The black dashed line is the identity line
