Final answer:
The statement that a person reinforced every 30 minutes is on a fixed ratio schedule is false. They would be on a fixed interval reinforcement schedule, characterized by reinforcements after a set period of time.
Step-by-step explanation:
If you reinforce a person every 30 minutes, she is fixed on a fixed interval reinforcement schedule, not a fixed ratio schedule. A fixed ratio schedule involves reinforcing behavior after a certain number of responses have been made, not after a set amount of time. The provided scenario of a person being reinforced every 30 minutes is based on a time interval, making it a fixed interval, not a fixed ratio schedule.
Fixed ratio would be akin to reinforcing Carla after she sells a set number of glasses. An example of a fixed interval is when June receives medication on a set time, regardless of how many times they exhibit a pain-related behavior.