Reinforcing content Chunk content The average adult can listen with understanding for 90 minutes, but with retention for only 20 minutes. The 10–2 rule After every 10 minutes of content spend 2 minutes interacting with the content. An idea presented only once has a 10% chance of being remembered after 30 days, but an idea intermittently reviewed six times has a 90% chance of being retained over 30 days.
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Facilitators’ Institute Training 2022
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