What was the behavior observed in Skinner's experiment after the rats experienced hunger?

In Skinner's experiment, the behavior observed in the rats after they experienced hunger was characterized by the rats pressing the lever more rapidly. This was an indication of operant conditioning, where the rats learned that pressing the lever resulted in receiving food. The drive of hunger motivated them to engage in the lever-pressing behavior with increased frequency and intensity, demonstrating how a basic biological need can influence behavior through reinforcement.

This behavior highlights the concept of positive reinforcement, where the outcome (food) reinforces the behavior (lever pressing), making it more likely that the rats would repeat the action in the future when they were hungry again. The increased frequency of lever pressing illustrates the connection between a stimulus (hunger) and a response (lever pressing), a core principle in Skinner's theories of behaviorism.