Evidence is accumulating that knowledge about the brain empowers learning. This is because understanding how your brain learns and remembers fosters a sense of autonomy (i.e. making your learning independent of someone/something else) and autonomy is recognised as a key factor in effective learning.
This 10 minute video can provide you with insights into how to prime your brain for effective learning and it may help if you are worried about exams and feel that you are not learning optimally.
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