Figure 4.
The incentive motivational properties of an OS are extinction resistant. (A) Number of cues earned during the conditioned reinforcement test for each cue. (B) Magnitude of responses on the active minus inactive operant. (C) Number of port entries made while the 2 sec cue was present following a response on the active operant. (D–F) same as A–C but the individual data. For all figures bars indicate mean + SEM. (OS) occasion setter, (CS) conditioned stimulus. (*) P < 0.05 for post-hoc comparisons, (^) P < 0.05 for Wilcoxon signed rank test against null value of 0.
