Graduated interval recall

Once you analyse the Ebbinghaus forgetting curve, you realize that a scientific method of rehearsal/revision or 'graduated interval recall' will fix a memory indelibly in your circuit. One of the early exponents of this system was Pimsleur who used this for his language courses. He found that students of foreign languages learnt best if they used his rule of five. This comprised of revision of the word or concept approximately one hour, one day, one week, one month and quarter after the initial introduction to the concept. This is the Pimsleur 1967 memory schedule.