
Mattone Leadership Enneagram Inventory (MLEI)®
You Must Go Deep to Understand Your Inner-Core.
The Mattone Leadership Enneagram Inventory (MLEI)® is the same assessment that the late Steve Jobs took in 2010 which later served as the centerpiece of his coaching sessions with John Mattone. Today it is the inner-core assessment leaders take in the first month of Intelligent Leadership executive coaching.
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Discover Your Inner-Core Gifts & Gaps
The Most Revealing Inner-Core Assessment
The Mattone Leadership Enneagram Inventory (MLEI)® is one of the most revealing “inner-core” leadership assessments that exist in the marketplace today. It is the strength, vibrancy and maturity of a leader's character, self-concept, values, thinking patterns and emotional make-up (inner-core) that determines their success in the “outer-core” (skills and competencies). In other words, success as a leader starts with greatness in the “inner-core”.
Book a Strategy SessionTwo MLEI Reports, Read With Your Coach
Unique Insights. Proven Strategies.
More than 10,000 global leaders, including 500+ Fortune 1000 CEOs, have taken the MLEI to discover their deep inner-core strengths and development needs.
As a coaching client, you receive two MLEI reports: (1) the MLEI Interpretive Report; and (2) the MLEI Coaching Report, with practical strategies to strengthen your inner-core strengths and address your gaps. Your coach walks through both with you and uses them, with your outer-core results, to build your development plan.
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How the MLEI Fits Into Coaching
- 1
Book a Strategy Session
Talk with our team about your goals and whether coaching is the right fit.
- 2
Complete the MLEI
Your inner-core assessment, taken in the first month of your engagement.
- 3
Debrief With Your Coach
Review your MLEI reports and your outer-core results together, then build your development plan.
Complete Your Leadership Picture
In coaching, the STLI-360 follows the MLEI to measure your outer core.

About John Mattone
John Mattone is the #1 authority on Intelligent Leadership, the world's top executive coach, the “coach of coaches” and one of the world's top ten leadership authorities and speakers. He is also the creator of the Mattone Leadership Enneagram Inventory (MLEI)®, which he first created in 1996. Since then, over 10,000 global leaders including over 500 of the Fortune 1000 CEOs have taken the MLEI.
“The most important decision you can make to become the absolute best leader and person you can be is the decision to be vulnerable. Most people look at this decision as weak, while the best of the best see it as strong, requiring massive courage. Taken together, vulnerability and courage are the seeds that ignite growth in people.”
Ready to Discover Your Inner Core?
Start with a strategy session. If coaching is the right fit, the MLEI comes in your first month, mapping the inner-core gifts and gaps that drive your leadership effectiveness.
- ✓Two MLEI reports, debriefed with your coach
- ✓Practical strategies for inner-core growth
- ✓Taken by 10,000+ global leaders

Nicholas Mattone
CEO, John Mattone Global
Email nick@johnmattone.com or call +1 774-836-5010
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