Definition

Spaced Repetition

Spaced repetition is a learning technique that schedules reviews of previously learned material at gradually increasing intervals. It exploits the psychological spacing effect — first documented by Hermann Ebbinghaus in 1885 — to move information from short-term into long-term memory far more efficiently than massed (cram-style) practice.

In a spaced repetition system, a learner sees a new piece of information once, then again after a short interval (a day), then after a longer interval (three days), then a week, then a month — with the interval expanding each time the learner correctly recalls the information. If they get it wrong, the interval resets.

For frontline training, spaced repetition is particularly powerful because:

  • It compensates for short attention windows. A worker only has to engage for 60–90 seconds at a time.
  • It prevents the post-onboarding forgetting cliff. Most safety, SOP, and product training is forgotten within weeks of the initial session.
  • It surfaces struggling learners early. The system can flag any worker who repeatedly fails the same recall prompt and route them to a manager.

WhatsApp is a near-ideal channel for delivering spaced repetition because the daily notification habit is already established — every push lands in a chat the worker already opens.

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