Table 1.

Outline of Procedures of Experiment 3

Group	Discrimination training	Compound	Test
TA (ambiguous target)	T→sucrose, NT→nothing	LT→SUCROSE	L, T
F (feature)	T→sucrose, NT→nothing	LN→SUCROSE	L, N
C (control)	T→sucrose, N→nothing	LN→SUCROSE	L, N
TC (consistent target)	T→sucrose, N→nothing	LT→SUCROSE	L, T

Note. T and N refer to two auditory stimuli, a 1,500-hz tone and a white noise; however, their roles were fully counterbalanced in each group (not shown above; see text). L refers to a visual stimulus; “sucrose” refers to delivery of 0.3 ml of 0.2 M sucrose solution; “SUCROSE” refers to delivery of 0.6 ml of 0.4 M sucrose solution.