Unlimited Memory: How to Use Advanced Learning Strategies to Learn Faster, Remember More and be More Productive (Mental Mastery, #1)

by Kevin Horsley

In Spitzer’s experiment it was found that the average person who learns textbook material (without memory methods) remembers only the following: After 1 day: 54% After 7 days: 35% After 14 days: 21% After 21 days: 19% After 28 days: 18%