Figure 2.
Occasion setters have incentive motivational value. (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. Purple reflects the OS + CS test, red reflects the OS alone test, and blue reflects the CS alone test. (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.
