It is easier to learn something new if you can link it to something you already know. A specific part of the brain appears to be involved in this process: the medial prefrontal cortex. These findings further enhance our understanding of the brain mechanisms that underlie effective learning. A researcher added a tip for secondary school students taking their final exams: "If you don't immediately know the answer to a question, you could first try recalling what you already know about that topic. This might help you to come up with the right answer after all."