Final answer:
In the context of operant conditioning, when a learner displays problem behavior after reinforcement has been paired, you should use extinction and analyze what went wrong. Extinction refers to the reduction of the conditioned response when reinforcement is withdrawn. Task demands can also be reduced if they are contributing to the problem behavior.
Step-by-step explanation:
After you are paired with reinforcement, if the learner engages in problem behavior you should use extinction, but it's also essential to go back and analyze what went wrong. The process of extinction involves the decrease in the conditioned response when the unconditioned stimulus is no longer paired with the conditioned stimulus. This could occur if the reinforcement for the desired behavior is stopped, leading to a decrease or cessation of that behavior over time.
You could also consider lessening the task demand significantly if the initial demand is too high, which might be causing the problem behavior. This gradual shaping of behavior by reinforcing responses that increasingly resemble the desired behavior is a key concept in operant conditioning, where behaviors are modified through reinforcement or punishment.