Fig 1.
A picture of a station set up within the lab.
Table 1.
Experimental sequence for Groups 1 and 2 including the number of sessions and observations between treatment conditions.
Table 2.
Demographic balance test across treatments.
Table 3.
Regression estimates for all games including demographic controls.
Fig 2.
Mean and distribution comparisons in the number of tokens sent.
Note. Red lines in (b) present the univariate kernel density estimation.
Fig 3.
Mean and distribution comparisons in the proportions of tokens sent and returned.
Note. For reciprocity, those who received 0 tokens as Player 2 were treated as missing values [78]. The x-axis in the histogram represents the proportion of tokens the players received. Red lines in (b) present the univariate kernel density estimation.
Fig 4.
Mean and distribution comparisons in the number of safe choices.
Note. Red lines in (b) present the univariate kernel density estimation.
Table 4.
Mann Whitney and Kolmogrov-Smirnov tests in early periods (1–5) and late periods (6–10) for the multiple periods games.
Fig 5.
Mean and distribution comparisons in the average profits of 10 periods.
Note. Red lines in (b) present the univariate kernel density estimation.
Fig 6.
Mean and distribution comparisons in the gamble choices.
Note. Red lines in (b) present the univariate kernel density estimation.
Fig 7.
Mean and distribution comparisons in the average number of tokens kept in 10 periods.
Note. Red lines in (b) present the univariate kernel density estimation.
Fig 8.
Mean and distribution comparisons in the number of tokens sent and the acceptance of the offer.
Note. For player 2, acceptance is coded as 1 and rejection is coded as 0. Red lines in (b) present the univariate kernel density estimation.
Fig 9.
Mean in the average number of tokens reported in 10 periods and distribution comparisons in the number of tokens reported in 10 periods.
Note. Dashed line indicates the expected density of each token occurring, in which a truthful distribution (0.2) [92, 94]. Red lines in (b) present the univariate kernel density estimation.
Table 5.
Relationship between number of safe choices and cumulative number of calibration attempts prior to game.
Table 6.
Holt and Laury number of safe choices OLS with universe restrictions.