In graph A responding is maintained on a VR 25, and the sa…
In graph A responding is maintained on a VR 25, and the same schedule is offered in graph B but a red light with a circle and diagonal line is presented which has been paired with an aversive event. Although the VR 25 is still available there is a reduction in responding. This is an example of what principle where a respondent pairing interferes with ongoing operant behavior?