If you’ve ever spent hours cramming for a test—only to forget most of it a week later—you’re not alone. Students (and adults!) often assume that the more time we spend studying in one sitting, the more we’ll remember. But neuroscience shows that our brains simply don’t work that way. Learning isn’t about how long you study—it’s about how you s p a c e o u t your study time. This idea, known as spaced practice or the spacing effect, has been one of
