Table 2.

Learning environment for the Weather Prediction Task showing all possible card arrangements, their probability of occurrence across trials and their associated probability of outcome (fine or hot) during the task

Arrangement	Cards present				Mean total	P (arrangement)	P (fine or hot/arrangement)
	1	2	3	4
A	0	0	0	1	38	0.095	0.895
B	0	0	1	0	18	0.045	0.778
C	0	0	1	1	52	0.13	0.923
D	0	1	0	0	18	0.045	0.222
E	0	1	0	1	24	0.06	0.833
F	0	1	1	0	12	0.03	0.5
G	0	1	1	1	38	0.095	0.895
H	1	0	0	0	38	0.095	0.105
I	1	0	0	1	12	0.03	0.5
J	1	0	1	0	24	0.06	0.167
K	1	0	1	1	18	0.045	0.556
L	1	1	0	0	52	0.13	0.077
M	1	1	0	1	18	0.045	0.444
N	1	1	1	0	38	0.095	0.105
Total					400	1.00

0 = card absent, 1 = card present.