Table 3.

Hypothesized Stimulus Classes Resulting from the Pair-Comparison Training Tasks in Experiment 2.

Left-Response Classes	Right-Response Classes
[R1, T2]	[R1, H2]
[G1, H2]	[G1, T2]
[R1, R2]	[G1, G2]
[G1, G2]	[G1, R2]
[T1, T2]	[T1, H2]
[H1, H2]	[H1, T2]
Merged Left-Response Class
[R1, R2, G1, G2, T1, T2, H1, H2]

Note. R = red, G = green, T = triangle, H = horizontal, 1 = first ordinal position in sample-comparison sequence, 2 = second ordinal position in a sample-comparison sequence. Brackets encompass stimuli presumed to be members of a stimulus class. Italics designate individual stimuli that are common to more than one left-response class.