Forgetting Curve

What is the Forgetting Curve?

The forgetting curve is a model of the retention and forgetting of information over time. It shows that, without repetition, what has been learned fades quickly – an important reason to repeat messages.

Forgetting Curve in Detail

The forgetting curve goes back to the psychologist Hermann Ebbinghaus, who systematically investigated retention and forgetting in the late 19th century. His core finding: without repetition, a large part of newly absorbed information is lost within a short time; the curve first falls steeply and then flattens. This has practical consequences for communication: a message said once rarely sticks. Anyone who wants a key message to land and be remembered must phrase it concisely, repeat it and convey it consistently across various channels. Vividness, emotion, structure and relevance also improve retention. In speeches, presentations and media work, the forgetting curve explains why repetition and a few clear key messages are so effective: it is not the amount of information that counts but what sticks. Those who know the forgetting curve design communication so that the most important things are remembered – through focus, repetition and memorable phrasing.

In practice, the forgetting curve, which goes back to Hermann Ebbinghaus, describes how quickly newly learned material is lost without repetition – often a large part within hours and days. This has two important consequences for communication. First: messages must be memorable and repeated, because only what is conveyed repeatedly and vividly sticks – hence the value of clear key messages and the three-block technique. Second: the curve also operates when learning presentation skills, which is why repetition and regular practice are decisive. Anyone who wants to anchor content or abilities lastingly relies on repetition, active application and linking to what is already known. The forgetting curve thus explains why one-off information rarely suffices and why repetition is not a luxury.

What does the forgetting curve mean for communication?

The forgetting curve shows that information fades quickly without repetition. For communication this means: phrase key messages concisely, repeat them and convey them consistently, so that the most important things stick – focus beats quantity.

Forgetting Curve – Examples in Practice

A speaker repeats her key message at the beginning and at the end. A company conveys a message consistently across several channels. A trainer summarizes the most important points at the end to strengthen retention.

Forgetting Curve: Key Features at a Glance

• Origin: Hermann Ebbinghaus
• Core finding: rapid decline without repetition
• Consequence: repeat messages
• Amplifiers: vividness, emotion, structure
• Principle: focus instead of amount of information

Related Terms

• Key Message
• Wording
• Three-Block Technique
• Placing a Message
• Target Group Check

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Forgetting Curve: Frequently Asked Questions

What is the forgetting curve?

A model of retention and forgetting over time: without repetition, a large part of newly absorbed information is quickly lost.

Who developed the forgetting curve?

The psychologist Hermann Ebbinghaus, who systematically researched retention and forgetting in the late 19th century.

What does the forgetting curve mean for communication?

That a message said once rarely sticks. Key messages should be phrased concisely, repeated and conveyed consistently.

How do you make sure messages stick?

Through a few clear key messages, repetition, vividness, emotion and structure – focus on the most important things instead of the amount of information.