Recalling vast amounts of information poses a common challenge, especially for students absorbing new knowledge daily. Memorizing information from lectures and readings can be daunting. This process is made extra difficult because of what is called the Ebbinghas forgetting curve, which demonstrates how people have a strong tendency to forget newly acquired information quickly, unless they take special steps to consciously remember.

What Is the Ebbinghaus Forgetting Curve?

The Ebbinghaus forgetting curve is the natural tendency of people to forget information as time goes by, especially during the short period immediately after they have learned the information. In fact, these first few minutes or hours after the learning show the steepest drop in the rate of retention, as can easily be seen in the visual image of the Ebbinghaus forgetting curve in graph format.

After this, the retention rate becomes stable. In essence, the information retained after the initial stage is likely to endure for a considerable time. Nevertheless, as time passes, only a small fraction of the original knowledge we were meant to learn remains intact, following the natural course of forgetting. But the good news is that the forgetting curve can become a lot less steep with the help of proven methods.

Memory retention can also improve significantly with the help of memory strengthening techniques, like regular reviews. These reviews need not be continuous though. It has been found that leaving gaps between the reviews, which is called spaced learning, produces much better results.

History of the Ebbinghaus Forgetting Curve

The forgetting curve was discovered by and named after the German psychologist Hermann Ebbinghaus, sometime between 1880 and 1885. He had written about the procedures and theories he used as well as the results of his experiments in great detail in his published work, Memory. Ebbinghaus also made numerous contributions to research on learning and memory, in which he was one of the pioneers.

As the first psychologist to dedicate his studies to memory, Ebbinghaus did not have a lot of resources to work with and so had to conduct numerous memory experiments, mostly on himself. Most of his tests involved the use of nonsensical groups of letters in the CVC or consonant-vowel-consonant format. He would make himself memorize these “words” and go about his other activities. He would then test his knowledge of these words periodically over the next few days, plotting the results on a graph.

Ebbinghaus summarizes the results of his studies with the equation R = e^(-t/s) where R is one’s recall readiness, s is the strength of one’s memory, t is the period that has elapsed from the time of learning to the time of testing, and e is Euler’s number. This is a mathematical constant that equals approximately 2.71828.

Complex as it all sounds, these very valuable studies have eventually revealed what we know today as the forgetting curve.

What Is the Purpose of the Ebbinghaus Forgetting Curve?

The initial purpose of the Ebbinghaus forgetting curve was to simply figure out why people forgot pieces of information and to demonstrate the diminishing rate of retention and how it changes over time. Today, though, the Ebbinghaus forgetting curve serves as a tool to improve memory by reminding people to regularly review newly learned information, and to consolidate it to boost the rate of retention.

Why Is the Ebbinghaus Forgetting Curve Important?

The Ebbinghaus forgetting curve is very important because it enables people to learn more and to remember what they have learned for a very long time. It emphasizes that in order to truly learn new information or new skills, you need to review and retrieve this information several times. Otherwise, it will all just fall into the natural forgetting curve and disappear from your memory as if you did not do any learning in the first place.

Over the years, several methods and strategies have been developed to deal with the learning curve. Knowing that it exists has prodded people to take steps to consciously strengthen memory instead of just relying on initial learning, which has proven to be not very effective in the long run.

A thorough understanding of the Ebbinghaus forgetting curve is very important so that you can combat it properly, and use ways that will be most effective for you. Although its principles are certainly applicable to many situations, including most professions or lines of work, as well as in personal situations, they are particularly valuable for individuals that need to absorb and retain huge amounts of information for long-term use.

How to Combat the Ebbinghaus Forgetting Curve

It is a naturally occurring phenomenon in everyone, which makes the forgetting curve a bit overwhelming. Combatting it would be like going against nature, and that is definitely not going to be easy. It is certainly a challenge but one that can quite easily be overcome, given the right mindset, attitude and tools.

In one of the most significant discoveries that Ebbinghaus made during his studies, it became clear that regular reinforcement played a very important role in strengthening memory. The most crucial period is in the hours immediately after learning. During this time, you need to constantly review the information to boost the chances of it sticking to your mind.


Information that is clear, concise, and easily understandable is easier to remember than long and complex ideas. Therefore, it will help a lot in fighting the Ebbinghaus forgetting curve if you can simplify information as much as possible before you attempt to learn it.


If a piece of information is not personally relevant, it’s very likely that the person trying to learn it will still eventually forget it. This can be avoided by finding meaning in the information by relating it to a personal experience perhaps. Admittedly, this strategy is not always easy and might even seem impossible in some cases but if you can relate to even a small part of the information, it will be easier for you to remember it.


Active involvement is a great aid in learning. Take a seminar or class lecture, for example. The audience will learn better if there are interactive elements like games or even just a simple question and answer portion, rather than if they just sit there and listen while the speaker drones on the entire time.

Accessible Training

In the corporate setting, training is frequently held in order to improve the skills of employees. But the traditional once-a-month training does not really cut it when you consider the points raised in the Ebbinghaus forgetting curve. A day or two after the training, the participants would most likely just forget what they have learned, unless there are frequent follow-throughs, and open access to continued training and learning.

Thus, when holding training sessions or seminars, it is very important for companies to take advantage of technology to allow employees to continue their learning whenever they can. Mobile learning, for instance, makes it much easier for learners to accomplish the constant repetition and review that is a vital part of overcoming the Ebbinghaus forgetting curve.

How to Use the Ebbinghaus Forgetting Curve – 21 Day Schedule Template

The Ebbinghaus forgetting curve has been known for more than a century and as mentioned, many methods have been developed to try and fight it. One of the most effective techniques for long-term learning is the 21-day schedule, and that is the basis of the template that we have here at Boardmix.

The template consists of 21 rows corresponding to the 21 days of the schedule. For each row, there is a column for the study content, as well as two separate sets of columns for same-day review and for long-term review.

The same-day review section has columns for 5-mins, 30-mins, and 12-hours, which are the prescribed intervals during which you must review the information for optimal retention. As for the long-term review, there are columns for days 1, 2, 4, 7 and 15, followed by columns for months 1, 3 and 6. You need to mark each entry accordingly as you finish the review for that particular session.

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