Table 2. Category Structure Used by Blair et al. (2009) .

Category	D1	D2	D3
Note. While eye-tracking data were collected, participants learned to sort the eight stimuli into four different categories (A–D). The A and B categories shared the same relevant dimensions (D1 and D2), as did categories C and D (D1 and D3). The optimal strategy was to first sample Dimension 1 (D1), and then sample either D2 or D3 depending on its value (i.e., if D1 = 0, the optimal strategy would be to sample D2, otherwise, one should sample D3). See also Figure 1B.
A	1	1	1
A	1	1	2
B	1	2	1
B	1	2	2
C	2	1	1
C	2	2	1
D	2	1	2
D	2	2	2