Response Cost: Is a negative punishment that involves taking back tokens that have been earned. It can be thought of as a fine for unwanted behavior which, hopefully, creates a decrease in the future possibility of this behavior occurring.
A token can serve as a Generalized Conditioned Reinforcer (GCR). That is, it has been paired with many conditioned and unconditioned reinforcers. GCRs are reinforcers that can be exchanged for other reinforcers and are less likely to be influenced by satiation and deprivation. Money, for example, is a type of GCR and has little sensitivity to satiation.