Interesting Aspects of Adult Development

Nial O'Reilly • November 12, 2024

Extend and Include

When we read about adult vertical development in articles such as ‘Seven Transformations of Leadership’ we risk coming away with the impression that the process is linear, stepped, progressive and hierarchical. It’s hard to write about the phenomenon without creating this impression. However it is just not so! We can’t leave our past selves, our histories and earlier beliefs behind and start anew. We retain these within us as our perspective extends. We develop capability at a new level of meaning-making or ‘Action Logic’ but our capacity for the earlier versions stay within us. As in the case of the dolls - each doll dwells within the other.


Various developmental theorists have sought to define the different ‘levels’ or ‘stages’ of development which seem to exist, each having distinct flavours and features. The wonderful Robert Kegan describes three phases of evolution of self in adulthood, naming them ‘socialised’, ‘self-authored’ and ‘self-transforming’. Nick Petrie, whose writing and approach I admire, talks about the phases as ‘dependent conformer’, ‘independent achiever’ and ‘inter-dependent collaborator’. At Harthill, David Rooke and others have built on the work of Jane Loevinger, Suzanne Cooke-Greuter and Bill Torbert to create a perspective particular to leadership and organisations. In Harthill’s Leadership Development Framework (LDF) the stages or levels are more granular and named as: Impulsive, Opportunist, Diplomat, Expert, Achiever, Individualist, Strategist, Alchemist and Ironist. In each of these cases the story of ‘extend and include’ prevails with each expansion building on the previous one in an integrated sequence.


One might assume that when we grow developmentally we leave the earlier ‘levels’ behind and act out of the latest, ‘best’ version of ourselves all the time. Yet we all have experience of not showing up at our best in certain situations. At times like these we show up at a level or two below what we are capable of because of the circumstances, our state of health, our emotional state or our stress levels. This phenomenon, called ‘fallback’ is written about beautifully by Valerie Livesay. If you want to see this in action come to my house where you might see me arguing with my wife about how I load the dishwasher having spent the day facilitating a group to leverage the later stages of adult development!


Having a good understanding of the notion of ‘extend and include’ is important when working with vertical development, your own, and your developmental coaching clients.


By Nial O'Reilly June 8, 2026
A new European survey of psychiatric trainees , published in March, lands a finding that should not surprise anyone and yet keeps surprising the system: 63% had no leadership training in their programme, every single respondent said there should be, and those who did receive some were, on average, dissatisfied with it. The diagnosis is correct. The treatment being prescribed worries but does not surprise me. Look at how the survey — and the institutions responding to the same gap — define “leadership.” It is a list of competencies to be acquired: communication, teamwork, public speaking, professionalism, networking, media interaction. The EPA’s new Leadership Academy, launched last year and a genuinely welcome initiative, describes its aims in almost identical terms: enhancing communication skills, team management, presentation and public speaking technique. Even the UEMS mandate, which I’m glad exists, asks trainees to “acquire and continuously maintain” leadership skills. Acquire and maintain. Those are horizontal verbs. They describe the addition of capabilities to a person whose way of making sense of the world is treated as fixed. But notice what the survey authors keep tripping over without the language to name it. They report that the transition from trainee to consultant — the increase in responsibility, and crucially the increase in “awareness about limitations” — changes which skills people value, and they cite this as a driver of leadership development. That is not skill acquisition. That is a shift in how a person constructs meaning, authority and their own role. In the language of adult constructive-developmental theory, and what we recognise in Harthill a s movement between Action Logics — the kind of vertical growth that no competency checklist can deliver, because the checklist assumes the meaning-maker stays the same while only the toolkit grows. This matters beyond psychiatry. The paper itself notes that the COVID pandemic was what “firmly established” leadership as central to medical identity. Yet what that period actually exposed in healthcare leaders was rarely a deficit of communication technique. It was the struggle to hold complexity, ambiguity and competing legitimate demands without collapsing into false certainty or paralysis. That is a capacity of mind, not a line on a syllabus. You can be an extraordinarily skilled communicator and still be overwhelmed by a problem that exceeds your current way of organising reality. So here is the risk. Europe has correctly diagnosed that medical leadership training is absent. The instinct now is to fill the vacuum quickly, and the fastest thing to reach for is a competency framework — definable, teachable, assessable. We will end up training the what of leadership while leaving untouched the who that determines whether any of it transfers under pressure. None of this is an argument against the EPA Academy or against teaching skills. Skills matter. The point is sequencing and depth: horizontal capability sits on a vertical foundation, and a leader’s stage of development shapes whether they can even use the skills we give them. The same conflict-resolution training lands entirely differently on an Expert-stage clinician defending technical correctness and an Achiever-stage one balancing outcomes across a team — and differently again on someone beginning to question the systems they operate inside. The opportunity for the medical leadership community is to build the vertical dimension in from the start, rather than discovering in ten years that the competency programmes plateaued. The evidence is already pointing there. The survey’s own most-favoured modality — a blend of theory and lived practice, reflected on over time — is exactly the experiential, inquiry-based structure that supports developmental growth, and exactly what most current provision lacks. Diagnose the gap as horizontal, and you fill it horizontally. Recognise that what complexity demands is bigger minds, not just fuller toolkits, and you build something that lasts. Santos et al., “Leadership skills training needs of early career doctors: a European survey,” Academia Mental Health and Well-Being, 2026.
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