Table 1.

Sequence of experimental conditions.

		Stimulus contingency
	Correlation	ON Contingency	OFF Contingency	Paired/Unpaired
1	+1	NC	C	UNP
2	−1	NC	C	UNP
3	−1	NC	NC	UNP
4	+1	NC	NC	UNP
5	−1	C	-	P
6	−1	C	C	UNP
7	+1	C	C	UNP
8	+1	C	-	P

Note. Correlation is the correlation between the arranged food ratios and stimulus ratios across the seven components. Stimulus contingency is either C (response contingent) or NC (response noncontingent) for both the onset and offset of the green stimulus. Paired refers to whether food deliveries were preceded by the green stimulus (P) or not (UNP). 100 sessions were conducted for each experimental condition.