Table 2.

The net value of each trial in the original IGT.

IGT	A	B	C	D
1	100	100	50	50
2	100	100	50	50
3	-50	100	0	50
4	100	100	50	50
5	-200	100	0	50
6	100	100	50	50
7	-100	100	0	50
8	100	100	50	50
9	-150	-1150	0	50
10	-250	100	0	-200
11	100	100	50	50
12	-250	100	25	50
13	100	100	-25	50
14	-150	-1150	50	50
15	-100	100	50	50
16	100	100	50	50
17	-200	100	25	50
18	-50	100	-25	50
19	100	100	50	50
20	100	100	0	-200
21	100	-1150	50	50
22	-200	100	50	50
23	100	100	50	50
24	-250	100	0	50
25	100	100	25	50
26	-100	100	0	50
27	-150	100	50	50
28	-50	100	50	50
29	100	100	-25	-200
30	100	100	0	50
31	-250	100	50	50
32	-100	-1150	50	50
33	-150	100	50	50
34	100	100	25	50
35	100	100	25	-200
36	100	100	50	50
37	-50	100	-25	50
38	-200	100	50	50
39	100	100	0	50
40	100	100	-25	50
Final Outcomes	-1000	-1000	+1000	+1000
Gain-loss Frequency (in average 10 trials)	5 gains 5 losses	9 gains 1 loss	6.25 gains 2.5 standoffs 1.25 losses	9 gains 1 loss