The “Learning Pyramid,” often depicted as a triangle illustrating different methods of learning and their respective retention rates, is a widely shared model in educational contexts. It suggests that people retain only 10% of what they read, 20% of what they hear, and up to 90% of what they do. While its simplicity and appeal make it popular, this model lacks scientific grounding and can mislead educators and learners alike.
The Origins of the Learning Pyramid
The Learning Pyramid, also known as the “Cone of Learning” or “Cone of Experience,” is frequently attributed to Edgar Dale, an influential educator. However, Dale’s original work, published in 1946, did not include percentages or imply fixed retention rates for different learning methods. Over time, these numbers were added without credible research to support them.
The National Training Laboratories (NTL) in Bethel, Maine, is often cited as the source of the percentages. However, the organization has admitted that it cannot provide the original research backing these figures.
Why the Learning Pyramid Is a Myth
There are several reasons why the Learning Pyramid should not be accepted as a scientific model:
- Lack of Evidence: No empirical studies substantiate the specific percentages associated with the pyramid. Critics have noted that these figures are arbitrary and not based on rigorous research.
- Oversimplification: The pyramid assumes that learning is linear and that retention improves predictably as one progresses from passive to active methods. However, learning is complex and influenced by various factors, such as prior knowledge, motivation, and context.
- One-Size-Fits-All Approach: The model implies that the same methods work equally well for all learners, ignoring individual differences and the interplay of multiple strategies.
- Misrepresentation of Dale’s Work: Edgar Dale’s original “Cone of Experience” was a visual representation of the abstractness or concreteness of different media, not a hierarchy of retention rates.
The Appeal of the Learning Pyramid
Despite its flaws, the Learning Pyramid persists because:
- Simplicity: Its clear structure and numerical precision make it easy to understand and share.
- Authority Bias: Its association with respected names like Edgar Dale and NTL lends it unearned credibility.
- Practical Appeal: It aligns with common sense ideas about active learning being more engaging and effective.
The Real Science of Retention
While the Learning Pyramid lacks evidence, research has identified strategies that genuinely enhance retention:
- Active Learning: Techniques like summarizing, questioning, and teaching others improve understanding and retention.
- Spaced Repetition: Spreading study sessions over time strengthens memory.
- Retrieval Practice: Actively recalling information is more effective than passively reviewing it.
- Multimodal Learning: Combining visual, auditory, and kinesthetic elements can enhance engagement and comprehension.
Moving Beyond the Myth
To promote effective learning, educators should focus on evidence-based strategies rather than relying on oversimplified models like the Learning Pyramid. Here are some practical steps:
- Emphasize Evidence: Base teaching methods on research-supported practices, such as retrieval practice and formative assessment.
- Encourage Reflection: Help learners evaluate what works best for them and adapt their strategies accordingly.
- Promote Flexibility: Recognize that different contexts and goals may require different approaches.
Conclusion
The Learning Pyramid, while visually appealing and easy to understand, is not grounded in scientific evidence. By moving away from such myths and embracing proven learning strategies, educators and learners can achieve more meaningful and effective outcomes. Let’s build our educational practices on a foundation of research, not convenience.
The next time someone shares the Learning Pyramid, remember: effective learning is far more complex than a simple triangle.