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Without reviewing newly learned information, research suggests you could lose up to 70% of retention in just one day. If you review the material at spaced intervals after the initial learning, then the forgetting curve begins to flatten out and you get significantly better long-term retention.

 

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Now the goal here is to review the material at the right time.

There is a phenomenon in cognitive psychology called ‘rdesirable difficulty” that suggests the harder your brain has to work to retrieve information, the stronger it gets encoded into your long-term memory.

 

Therefore, in order to optimize spaced repetition, you should revise the material just as your brain forgets some of the knowledge. The extra brain power required to retrieve the slightly lost information will promote durable learning.

Practically, this means you will have shorter spaced intervals between study sessions early on while the material is still new, and then wider spaced intervals later when the material is more familiar. For example, you may study a concept today, tomorrow, five days later, two weeks later, and then a month later.

 

Moreover, the amount of studying in the subsequent sessions should decrease significantly as your baseline knowledge will be much higher than if you had allowed yourself to fully forget the information.

 

 

E xarnining the Scientific Research:

 

 

 

Scientists Karpicke and Bauernschmidt