Table 2A.

An example for the calculation of h values

Order	Choice	Decisions	Predicted h values	Actual h value
1	(1) 10 Yuan 100% vs. (2) 14 Yuan 90%	2	3.60
2	(1) 10 Yuan 100% vs. (2) 14 Yuan 80%	2	1.60
3	(1) 10 Yuan 100% vs. (2) 14 Yuan 70%	2	0.93	0.75
4	(1) 10 Yuan 100% vs. (2) 14 Yuan 60%	1	0.60
5	(1) 10 Yuan 100% vs. (2) 14 Yuan 50%	1	0.40
6	(1) 10 Yuan 100% vs. (2) 14 Yuan 40%	1	0.27
7	(1) 10 Yuan 100% vs. (2) 14 Yuan 30%	1	0.17
8	(1) 10 Yuan 100% vs. (2) 14 Yuan 20%	1	0.10
9	(1) 10 Yuan 100% vs. (2) 14 Yuan 10%	1	0.04

Table Legend: Shown are the nine trials with 14 Yuan and varied probabilities of receiving. One participant chose the probabilistic option in the top three trials and chose the certain option (i.e., 10 Yuan) from the fourth trial, thus, the h value for the current amount of probabilistic reward was 0.75, i.e., the geometric mean of the bounded ranges between 0.93 and 0.60.