Final answer:
If a rat presses the same lever in each component of a chain of reinforcement, then the chain is chained.
Step-by-step explanation:
If a rat presses the same lever in each component of a chain of reinforcement, then the chain is chained. This term refers to a sequence of behaviors or tasks that are reinforced individually but occur one after another. In a chained reinforcement schedule, each behavior in the sequence must be completed before the next one can start. For example, if a rat has to press a lever in Box A, then go to Box B and press another lever, and finally go to Box C and press a third lever to obtain a reward, this would be an example of a chained reinforcement schedule.