Table 1.

Successive Matching Training Contingencies in Experiment 3.

R → T • FI 5″
R → H • EXT
G → T • EXT	Symbolic
G → H • FI 5″
R → R • FI 5″
R → G • EXT
G → R • EXT	Hue identity
G → G • FI 5″
T → T • FI 5″
T → H • EXT
H → T • EXT	Form identity
H → H • FI 5″