Why is it beneficial to review mnemonics at spaced intervals?

Reviewing mnemonics at spaced intervals is beneficial because it reinforces memory through repetition over time. This approach, often referred to as spaced repetition, takes advantage of the brain's natural learning processes. By revisiting information after gradually increasing intervals, learners can enhance retention and recall of the material.

When information is reviewed not just once but reiterated over time, it transitions from short-term to long-term memory, making it easier to access when needed. This method also helps to mitigate forgetting, as spacing out reviews allows the brain to consolidate knowledge more effectively than cramming or massed practice.

The other options do not represent effective strategies for learning. Making learning tedious, allowing focus on unrelated subjects, or decreasing study time do not support memory retention in the same way spaced intervals do. In fact, engaging actively with the material through spaced reviews is a more efficient and productive study method.