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Spaced Repetition

By Randy Salars

Spaced repetition is a learning technique that involves reviewing information at increasing intervals to boost long-term retention. It leverages the psychological spacing effect to make learning more efficient. By revisiting material just as you’re about to forget it, you strengthen memory and reduce the need for cramming.

Why Spaced Repetition Works

The brain tends to forget information that isn’t used or reviewed. Spaced repetition takes advantage of the “forgetting curve” by scheduling reviews at optimal intervals—right before you’re likely to forget. Each review strengthens the memory, so you can recall it for longer periods with less effort.

How to Use Spaced Repetition

Use flashcard apps (like Anki or Quizlet) that schedule reviews automatically based on your performance.
Review material just before you are likely to forget it, rather than all at once.
Gradually increase the time between review sessions as you master the material.
Mix old and new material in each session to reinforce learning and prevent boredom.
Apply spaced repetition to any subject—languages, science, history, music, or professional skills.

Practical Example

When learning vocabulary, review new words after 1 day, 3 days, 1 week, and 1 month to reinforce memory. If you recall a word easily, the interval increases; if you struggle, the interval shortens. This personalized schedule maximizes retention and minimizes wasted effort.

What Are Some Tips for Effective Spaced Repetition?

Keep your review sessions short and focused—consistency is more important than duration.
Actively recall the answer before flipping the card or checking your notes.
Use images, mnemonics, and examples to make information more memorable.
Edit or delete cards that are unclear or not useful to keep your deck relevant.
Combine spaced repetition with other techniques, like concept mapping or practice testing.

What Are the Benefits of Spaced Repetition?

Boosts long-term memory and recall
Reduces time spent on review and relearning
Prevents cramming and last-minute stress
Works for any age, subject, or skill level
Encourages active learning and engagement

Applications of Spaced Repetition

Language learning (vocabulary, grammar, phrases)
Medical and law school study (facts, terms, cases)
Exam preparation (standardized tests, certifications)
Music, math, and science concepts
Professional development and lifelong learning

What Are the Recommended Tools?

SuperMemo – The Spaced Repetition Algorithm
Anki – Spaced Repetition Flashcards
Quizlet – Spaced Repetition

What Are Some Inspiring Quotes About Spaced Repetition & Memory?

“Repetition is the mother of learning, the father of action, which makes it the architect of accomplishment.” — Zig Ziglar
“The spacing effect is one of the most remarkable phenomena to emerge from laboratory research on learning.” — Robert Bjork
“Don’t practice until you get it right. Practice until you can’t get it wrong.” — Unknown

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