Table 1.

Summary Information for Each Type of CMO

CMO-type	Description	Example
CMO-S	Alters the value of consequences that are under the control of an MO with which it has been paired	Time on the clock influences the reinforcing value of food
CMO-R	Alters the value of its own removal or continued presence as a type of reinforcement or punishment	Delivery of a demand establishes the reinforcing value of its removal
CMO-T	Alters the value of another stimulus or event as a type of reinforcement or punishment	Presence of a lock on a fridge establishes the reinforcing value of a key when access to food is valuable as a source of reinforcement