You’ve heard the frightening training stats:
- Sixty percent of training is forgotten 20 minutes after it’s taught.
- Three days after training the amount forgotten increases to 75 percent!
Think about that. It’s the equivalent of saying that for every hour of instruction, 45 minutes is wasted.
Any sensible person who sees these stats may wonder why they should bother with training in the first place. After all, these numbers are enough to make learning and development teams’ blood run cold. But the companies that use these statistics are actually abusing them.
What Is the Ebbinghaus Forgetting Curve?The history behind those scary (and overblown) learning statistics dates back more than 100 years to the work of German psychologist Hermann Ebbinghaus. Ebbinghaus was curious about how the brain forms and retains memories.
After a series of experiments, Ebbinghaus discovered the brain lets go of information at a reliable rate, which he termed the “Forgetting Curve.” His findings can be summarized in these statistics:
- After 20 minutes, the human brain can only recall 60 percent of new information.
- After 24 hours, 70 percent of that information has been forgotten.
- After a month, less than 25 percent of that information can be recalled.
For the last 100 years, people have been abusing the Ebbinghaus Forgetting Curve by stopping there and pulling morsels of data to disparage learning and development and make it seem as though the human brain isn’t capable of holding on to much.
But that’s not where Ebbinghaus’s research ended.
While Ebbinghaus found that memories degrade fairly quickly, he also delved into why some memories just stick.
First, he tested learners by exposing them to information over and over in a short window of time. As you can probably guess if you have crammed for a test, Ebbinghaus found short-term, quickly degrading benefits but no positive effect on long-term retention.
However, when he presented learners with information repeatedly over intervals of time that got progressively longer, the Forgetting Curve was flattened and long-term memories were produced. He termed this successful approach spaced repetition. But in the learning and development field, we call it reinforcement.
Practice Makes Perfect?While stats pulled from the Ebbinghaus Forgetting Curve are arguably the most abused stats in the learning and development industry, practice makes perfect may be the most abused phrase. It tells only half the story.
Imagine you spend all winter practicing your golf swing at an indoor driving range. No golf pro at your side. Just you and a bucket of balls. While the snow falls, you are faithfully striking those balls down the range as hard as you can. And you don’t just practice once. You practice repetitively over time.
The thaw comes and you hit the links only to discover that your swing is worse than it was in the fall. All that practice did was reinforce your bad swing, which is now a tougher habit to break.
Yes, you practiced. But you lacked coaching and feedback, so you certainly didn’t make perfect.
Feedback is also essential for successful employee training and reinforcement. If your employees don’t get the feedback they need during training and reinforcement, they will continue making the same mistakes and reinforcing bad habits, which will make them harder to break.
That’s why it’s important to build a training program that features real-time feedback, testing, and creative ways to reward learners for a job well done. Think checkpoints, assignments and tests, custom badges, kudos, and certificates. Beyond more traditional training methods, training simulations have also been proven to enhance skills reinforcement.
The bottom line is that by incorporating the right coaching and feedback, it is possible to flatten the Ebbinghaus Curve and create training that reinforces learning. As thought leaders in training
and development, the burden is on us to develop programs that engage our learners in these ways. Let's work together to make the Ebbinghaus Curve...forgotten."