Vertical Development: Growing Leaders Who Can Handle Complexity
Horizontal development gives leaders more tools. Vertical development changes how they think. One of these is dramatically more valuable for navigating complexity — and it is not the one most organisations invest in.
Vertical development is a leadership growth approach rooted in adult development theory that changes how leaders think — their capacity to hold complexity, tolerate ambiguity, and take multiple perspectives — rather than simply adding new skills or knowledge. It requires heat experiences, colliding perspectives, and elevated sensemaking, typically delivered through facilitated retreats.
There is a question that sits underneath every leadership development investment: are we giving this person more skills, or are we fundamentally growing their capacity as a leader? The distinction matters more than most organisations realise.
Adding skills to a leader is like upgrading the software on a computer. Useful, certainly. But there comes a point where the software demands more than the hardware can deliver — and no amount of new applications will solve the problem. You need a bigger operating system.
Vertical development is the work of upgrading the operating system. It changes not what a leader knows, but how they think — their capacity to hold complexity, tolerate ambiguity, take multiple perspectives simultaneously, and operate effectively when the playbook does not apply.
Horizontal development gives you more to work with. Vertical development changes the you that is doing the working.
What Vertical Development Actually Means
The concept comes from adult development theory — the work of Robert Kegan, Bill Torbert, Susanne Cook-Greuter, and others who spent decades studying how adults continue to grow in their capacity for meaning-making. Their research shows that adult development does not stop at maturity. People can continue to grow in how they make sense of the world — but only under the right conditions.
Horizontal vs. Vertical Development
Horizontal development adds competencies: a new framework, a new skill, a new piece of knowledge. The leader's underlying meaning-making system stays the same. Vertical development transforms the meaning-making system itself: the leader moves from a simpler way of understanding the world to a more complex, nuanced, and integrated way. They can see more, hold more, and navigate more — not because they know more, but because they have grown.
Think of it this way: a leader operating at an earlier stage of development might see conflict as something to be won or avoided. A leader at a later stage sees conflict as information about the system — something to be understood and worked with. Both leaders might have identical conflict management training. The difference is in how they hold the conflict, not what techniques they apply to it.
The Stages of Vertical Growth
While the research identifies many stages, the ones most relevant for leadership development are three broad movements that leaders can make during their career:
The Expert mind
The leader's identity is tied to their expertise and being right. They lead by knowing more than others. Challenge to their knowledge feels like a challenge to their identity. Effective in technical roles but struggles with adaptive challenges that require learning from others.
The Achiever mind
The leader's identity is tied to results and goals. They lead by setting direction and driving outcomes. They can take feedback and adjust tactics, but their framework for understanding the world is largely fixed. Effective in stable, predictable environments.
The Catalyst mind
The leader can hold multiple frameworks simultaneously. They see systems and patterns rather than just goals and results. They can question their own assumptions, learn from perspectives that challenge their worldview, and lead through ambiguity without needing premature resolution. Essential for navigating complexity.
How Vertical Growth Happens
You cannot teach vertical development. You cannot deliver it in a workshop or capture it in a framework. What you can do is create the conditions in which it naturally occurs. Three conditions are essential:
Heat experiences
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Experiences that take the leader to the edge of their current capacity — situations where their existing way of making sense of the world is not sufficient. This might be a cross-cultural leadership challenge, a role that requires leading without authority, or a facilitated experience that puts them in unfamiliar relational territory. The key is that the experience needs to be genuinely challenging, not just busy or stressful.
Colliding perspectives
Exposure to perspectives that genuinely challenge the leader's assumptions — not just different opinions, but different ways of making meaning. When a results-oriented leader spends sustained time with someone who leads through relationship, both are stretched. Facilitated leadership retreats that bring together leaders with diverse thinking styles create natural collision points.
Elevated sensemaking
The experience alone is not enough. The leader needs support in making sense of what happened — a coach, a facilitator, or a peer group that helps them extract the growth from the experience rather than simply recovering from it. This is where facilitation plays its most crucial role: helping leaders reflect on their experience in ways that produce development, not just learning.
Why Facilitation Is the Vehicle for Vertical Development
Training delivers horizontal development. Facilitation, done well, creates the conditions for vertical development. A skilled facilitator designs experiences that put leaders at their growth edge, creates a safe enough container for genuine vulnerability, surfaces the patterns and assumptions that leaders cannot see on their own, and holds the reflective space where new meaning can emerge.
This is fundamentally different from standing at the front of a room with a model on a slide. It requires the facilitator to work with what is actually happening in the room — the dynamics, the emotions, the resistance, the breakthroughs — rather than following a curriculum.
Investing in Vertical Development
Most organisations overinvest in horizontal development (training, courses, certifications) and underinvest in vertical development (facilitated retreats, systems coaching, experiential learning). This is understandable — horizontal development is easier to measure, easier to procure, and more comfortable for everyone involved.
But the leaders who will navigate the next decade's challenges — AI disruption, geopolitical volatility, generational workforce shifts, climate transition — are not the ones with the most certifications. They are the ones who have grown their capacity to hold complexity without collapsing into simplistic answers. That growth happens through facilitated experiences that challenge and support in equal measure.