Table 3.
Group | Acquisition | Extinction | Test |
---|---|---|---|
| |||
S1R |
S1R-O1 S2R-O2 |
S1R− |
S1R−? S2R−? |
S1 |
S1− |
||
R |
R− |
||
Control | − |
S1, S2: 30-sec tone and continuous light Ss, counterbalanced. R1, R2: lever press and chain pull response manipulanda, counterbalanced. O1, O2: grain and sucrose pellets, counterbalanced. +/−: presence or absence of a reinforcer, respectively. − : context exposure without the lever or chain present.