Spaced Repetition and Recall

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What is spaced repetition?

From: http://en.wikipedia.org/wiki/Spaced_repetition

Spaced repetition is a learning technique that incorporates increasing intervals of time between subsequent review of previously learned material in order to exploit the psychological spacing effect. Alternative names include spaced rehearsal, expanding rehearsal, graduated intervals, repetition spacing, repetition scheduling, spaced retrieval and expanded retrieval.

Articles

What software is recommended to help with learning?

Anki

Anki is a free, multi-platform, flashcard program that uses spaced repetition.

It is great for learning anything that needs to go into your long-term memory.

Mnemosyne

Mnemosyne is a multi-platform spaced repetition software. The strength of Mnemosyne is the clear and minimalistic interface while the software still offers all main features. Mnemosyne is open source and it has a research aspect associated with it: by (voluntary) collection of your learning history, it collects a huge database with useful information for mnemotechnic research.

Spreadsheets

Kinma posted an example spreadsheet that allows one to customize the repetition frequency.

Supermemo

Another popular spaced repetition program is Supermemo.

How often should information be reviewed in order to retain it?

Resources:

Dominic O'Brien

In the book, How to Develop a Brilliant Memory Week by Week, Dominic O'Brien suggests:

  • first review: immediately
  • second review: 24 hours later
  • third review: one week later
  • fourth review: one month later
  • fifth review: three months later

Many people might need more review than this.

Paul Pimsleur

Paul Pimsleur's intervals for language learning are:

  • 5 seconds
  • 25 seconds
  • 2 minutes
  • 10 minutes
  • 1 hour
  • 5 hours
  • 1 day
  • 5 days
  • 25 days
  • 4 months
  • 2 years

See also, the Pimsleur Method page.