The Learning Myth That Won’t Die: Why 70:20:10 Doesn’t Work for Reflective Leaders
When a ratio becomes religion, we stop thinking.
The 70:20:10 model has become so embedded in leadership and learning conversations that it is rarely questioned. It appears sensible at first glance, even reassuring. Most people intuitively agree that learning does not happen only in classrooms, and that experience matters.
The trouble begins when a descriptive observation hardens into a prescription.
For reflective leaders, that has real consequences.
What 70:20:10 actually was
The 70:20:10 model has become ubiquitous in learning and development circles. At a glance, it appears sensible:
- 70% of learning happens on the job
- 20% comes from relationships and social learning
- 10% comes from formal training
It is often cited as a guiding principle for designing workplace learning strategies.
And while it is well-intentioned, its application has gone badly off track.
The 70:20:10 model did not begin life as a learning formula.
It emerged from survey research asking executives to reflect on where they believed their own learning had come from over the course of their careers. The numbers were never intended to represent a scientifically calibrated breakdown of how learning should occur, nor were they derived from controlled studies of learning transfer or performance outcomes.
They were retrospective perceptions.
This matters, because self-reported recall is not the same thing as empirical evidence. Memory is shaped by hindsight, narrative coherence, and what people value looking back, not by careful measurement of how capability was built in real time.
Yet over time, the ratio has been reinterpreted as something far more precise than it ever was. It is now frequently treated as a rule. As a measurement device. Sometimes even as a business model for development.
It is none of those things.
Research reviews of workplace learning repeatedly show that learning effectiveness depends on design quality, feedback availability, and opportunities for reflection, not on the proportion of time spent in one category versus another.
The ratio tells us nothing about whether learning actually transfers into improved judgement or performance.
When ratios replace judgement
In practice, I rarely encounter 70:20:10 being used thoughtfully.
More often, it is invoked to justify underinvestment in formal learning, or to shift responsibility for development entirely onto individuals under the banner of “learning on the job”. The ratio becomes a convenient explanation for why structured support is reduced rather than improved.
This is where the model becomes actively unhelpful.
When learning is reduced to a numerical split, complexity is flattened. The difference between exposure and development is blurred. Reflection and feedback, which research consistently shows are central to learning from experience, are treated as optional rather than essential.
For reflective leaders, this is a particular problem.
Why the model fails reflective leaders
Reflective leaders do not learn performatively.
They tend to learn through thinking things through privately, revisiting experience, noticing patterns over time, and integrating new language or frameworks at their own pace. Many do not thrive in highly social learning environments that rely on constant verbal processing or public sense-making.
Well-designed formal learning often plays an important role for them, not because it replaces experience, but because it provides concepts they can work with independently. It gives them language. It gives them perspective. It gives them something to reflect with.
Reducing formal learning to “just ten per cent” strips away one of the most reliable supports for this kind of learner.
At the same time, the idea that most learning happens “on the job” only holds if the job itself is structured to support learning. Research on experiential development, including work by DeRue and Wellman, shows that experience leads to growth only when challenge is accompanied by feedback and space to reflect. Without those conditions, experience tends to reinforce existing habits rather than build new capability.
Busyness is not development and exposure is not learning.
Most roles are designed for delivery, not reflection. Without intentional design, on-the-job learning often becomes repetition rather than growth.
What the research actually points to
When you look beyond the ratio, a different picture emerges.
Studies of leader development consistently highlight the importance of how experience is processed. Learning is strengthened when people are able to make sense of what happened, understand why it happened, and experiment with different approaches over time. Feedback availability matters. So does learning orientation. So does psychological safety.
None of this fits neatly into a percentage.
The evidence does not support abandoning formal learning, nor does it suggest that social learning is always superior. What it points to instead is the need for deliberate design, shaped by the capability being developed and the person doing the learning.
For reflective leaders, that design needs to respect depth, autonomy, and space to think.
From ratios to design
A more useful starting point is not a model, but a set of questions.
What kind of judgement does this role actually require?
What experiences are likely to stretch that judgement meaningfully rather than overwhelm it?
What forms of input help this person think more clearly?
What support makes reflection possible rather than theoretical?
When development is designed this way, the distinction between formal and informal learning becomes far less important. What matters is whether the learning environment supports thinking, feedback, and gradual capability-building.
In my experience, reflective leaders tend to thrive when learning is optional rather than mandatory, when peer interaction is relational rather than performative, and when practice is supported rather than assumed. They benefit when reflection is treated as a core leadership skill rather than a personal preference.
None of this can be expressed as a ratio.
A quieter competitive edge
Most people follow the model.
Reflective leaders redesign it.
They curate what they read. They choose learning inputs carefully. They treat their work as a practice space rather than a test of worth. They pay attention to how their thinking changes over time, not how busy they have been.
Instead of asking whether they are complying with a learning framework, they ask whether their judgement is improving.
That question is far more demanding, and far more useful.
A resource to support this shift
To help you rethink how you approach development, I have created a guided worksheet:
Beyond 70:20:10: The Reflective Leader’s Design Map
It is designed to help you examine the assumptions you have inherited about learning, map a development rhythm that fits how you actually learn, and reflect on how your leadership capability is changing over time.
It is not a compliance tool. It is a design aid.
Further reading
Book: The Expertise Economy by Kelly Palmer and David Blake – for a sharp take on how learning should be designed for real performance.
Report: New Perspectives on 70:20:10 – This comprehensive report offers a balanced examination of the 70:20:10 model, discussing its practical applications, benefits, and limitations. It emphasises the importance of flexible interpretation rather than strict adherence to the numerical breakdown.
https://www.cedma-europe.org/newsletter%20articles/misc/New%20Perspectives%20on%2070-20-10%20(Nov%2014).pdf
Academic Paper: DeRue & Wellman (2009), “Developing Leaders via Experience: The Role of Developmental Challenge, Learning Orientation, and Feedback Availability.” Journal of Applied Psychology, 94(4), 859–875.
Final thought
There is no magic ratio.
There is only what works.
Reflective leadership demands design, not default.
Choose what serves your development. Discard what does not. And never mistake a ratio for a strategy.