Spaced practice is a learning strategy that involves reviewing material over multiple sessions with intervals of rest in between. This approach leverages the brain’s natural memory processes, allowing time for information to consolidate from short-term to long-term memory. Spaced learning improves retention and recall, especially when studying over days or weeks rather than in one sitting.

In contrast, massed learning—also known as blocked learning or cramming—involves intensive study of material in a single, uninterrupted session. While massed learning may yield short-term gains, it is generally less effective for long-term retention because the brain lacks the downtime needed to process and store information deeply.