Growth in complexity, perspective-taking, and meaning-making maturity.
Horizontal development adds skills. Vertical development changes how you think. This instrument measures leadership complexity across four dimensions: cognitive complexity, perspective-taking capacity, self-authoring maturity, and adaptive leadership. It surfaces where you are on the developmental trajectory and what it would take to move to the next stage. Not for everyone. Deeply valuable for those who are ready.

Your personalised report
Multi-page PDF + interactive web report
4
dimensions
Self + 360
assessment mode
11+
report pages
90-day
action plan
What It Measures
Every dimension is scored, benchmarked, and accompanied by specific coaching recommendations.
How many variables you can hold simultaneously. The ability to think in systems, paradoxes, and competing truths.
How readily you adopt viewpoints beyond your own. Not agreement. Understanding.
The degree to which your values and decisions originate from within rather than conforming to external expectations.
Your capacity to lead in ambiguity, hold tension without resolving it prematurely, and help others navigate complexity.

What You Receive
Four-dimension developmental profile with stage indicators
Current stage description with behavioural anchors
Growth edge analysis: what the next stage looks like and what it requires
Holding environment recommendations: conditions that support vertical growth
Optional 360 overlay showing how others experience your complexity
Interactive report, PDF, and Aiden AI voice debrief
Sample Report Insight
Your cognitive complexity is advanced but self-authoring maturity has not yet caught up. In practice this means you can see the full picture but still default to decisions that prioritise external approval. The growth edge is trusting your own judgement when it conflicts with consensus.
Who Is It For
Senior leaders who have mastered the technical skills and sense something deeper is missing
Anyone frustrated that traditional development programmes feel too simplistic
Leaders facing genuinely complex, ambiguous challenges with no clear right answer
Coaches and facilitators who want to understand their own developmental stage

Research Basis
Grounded in Robert Kegan's constructive-developmental theory, Bill Torbert's action logics, and Susanne Cook-Greuter's ego development framework, adapted for practical leadership application.
Developed by JBL High Performance
2,800+ leaders assessed worldwide
Get Started
From $99 you get the interactive web report, multi-page PDF, pattern signatures, micro-experiments, and three months of Aiden AI coaching.
Add 360 multi-rater feedback for perception gap analysis. Premium includes a 1:1 debrief with Jimmy and a personalised development plan.