Answer:
An intermittent reinforcement schedule.
Step-by-step explanation:
Intermittent reinforcement schedule may be defined as the schedule that produces the stable state that helps the individual to respond and maintained for long period of time.
The response occurs still for the sometime until it is not reinforced. The new respond begins after sometime. As Katrina puts dollar bill and the machine shows different response and this maintains for the long time. This clearly represents intermittent reinforcement schedule.