What is the spacing effect?

Learning lasts longer when study is spread over time

Spacing letters improves reading

What is the Leitner system?

Moving flashcards between boxes based on success

How do spaced repetition systems usually schedule reviews?

At gradually increasing intervals

Spacing Effect Quiz: Ebbinghaus and Spaced Repetition

Hermann Ebbinghaus memorized nonsense syllables for years to study forgetting, and this spacing effect quiz explains what he and later researchers discovered. Play 10 interactive questions on the forgetting curve, massed versus spaced practice, the Leitner box system, SuperMemo, Anki, retrieval practice, expanding intervals and how to apply spacing to real study.

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🎯 Daily Trivia Challenge • 🧠 10 Questions • ⏱️ 150 Seconds

Question 1 / 10 Time: 150s

Effect
What is the spacing effect?
Pioneer
Who first described the effect in 1885?
Syllables
What did Ebbinghaus memorize in his experiments?
Curve
What did he call the pattern of how memory fades?
Cramming
What is studying in one long block called?
Leitner
What is the Leitner system?
Software
Which early program used spacing algorithms in the 1980s?
Anki
Which popular flashcard app uses spaced repetition?
Testing
Which related effect shows recalling information strengthens memory?
Intervals
How do spaced repetition systems usually schedule reviews?

Explanations: answer key for all 10 questions

Q1: What is the spacing effect?
Answer: Learning lasts longer when study is spread over time
It is one of psychology's most reliable findings.
Q2: Who first described the effect in 1885?
Answer: Hermann Ebbinghaus
He studied his own memory.
Q3: What did Ebbinghaus memorize in his experiments?
Answer: Nonsense syllables
They avoided prior meaning.
Q4: What did he call the pattern of how memory fades?
Answer: The forgetting curve
Forgetting is fastest at first.
Q5: What is studying in one long block called?
Answer: Massed practice
It can feel effective but fades fast.
Q6: What is the Leitner system?
Answer: Moving flashcards between boxes based on success
Sebastian Leitner devised it.
Q7: Which early program used spacing algorithms in the 1980s?
Answer: SuperMemo
Piotr Wozniak created it.
Q8: Which popular flashcard app uses spaced repetition?
Answer: Anki
Medical students often use it.
Q9: Which related effect shows recalling information strengthens memory?
Answer: The testing effect
It is also called retrieval practice.
Q10: How do spaced repetition systems usually schedule reviews?
Answer: At gradually increasing intervals
Well-known items are shown less often.

Spacing Effect Quiz – Ebbinghaus and Spaced Repetition

The spacing effect is the finding that information is remembered better when study sessions are spread out rather than crammed together. Hermann Ebbinghaus described it in 1885 after memorizing lists of nonsense syllables and charting his forgetting curve.

Cramming, or massed practice, can feel productive but fades quickly. Spaced repetition reviews material at gradually longer intervals. Sebastian Leitner's box system moves flashcards forward when answered correctly and back when missed.

Software such as SuperMemo, created by Piotr Wozniak, and later Anki automated scheduling. Combining spacing with the testing effect, actively recalling answers, is one of the most effective study strategies.

What This Quiz Teaches

Students and lifelong learners will enjoy these questions.

What the spacing effect is
Who discovered it
How forgetting works
Which tools use it
How to study better

Did You Know?

Language apps often use spaced repetition.
Sleep between sessions helps consolidate memory.
Interleaving topics can also improve learning.
The effect appears in animals too.
Short, regular reviews beat one long session.