Final answer:
In a fixed interval reinforcement schedule, reinforcement is provided for the first correct response after a predetermined set amount of time has passed.
Step-by-step explanation:
If you provide reinforcement the first correct response after a set amount of time, you are using a fixed interval reinforcement schedule. This schedule rewards behavior after a predetermined, consistent interval of time has passed. This type of schedule tends to yield a pattern where responses increase as the time for reinforcement approaches, then briefly decline following reinforcement, resulting in a scalloped pattern of response rates over time.
A classic example of this can be seen in an individual recovering from surgery who receives pain medication at fixed time intervals. No matter how many times they may press the button for pain relief, the medication is only dispensed at the set intervals prescribed by their doctor.