As we can see in diagram 1, the forgetting curve is relatively straightforward: Without reinforcement, the average human will forget roughly half of what they’ve learned within three weeks, and ...

Studies that examine "the forgetting curve" have found that within a single hour of instruction, most trainees will have forgotten about 50% of what was presented. This Psychologist Hermann Ebbinghaus ...

Research shows we tend to forget most of what we learn or experience within 24 hours of encountering it. In fact, almost 50% of the knowledge we take in vaporizes within the first 20 minutes of ...

You forget things over time. We all do. But if you need to retain information for a test or presentation, you can be the Forgetting Curve with spaced repetition and engaged learning.

The forgetting curve describes how new information fades away. Once you’ve “learned” something new, the fastest drop occurs in just 20 minutes; after a day, the curve levels off.

The curve is a simple graphic demonstrating how information is lost over time, but it proved that time-related forgetting is real (and has been reaffirmed by further study since).