Meet The TetraTeam

Louise Duncan

When I discovered TetraMap over twenty years ago, little did I realise it would change the course of my life. I was fascinated by its simplicity and powerful potential as a learning experience.

“You can never learn less; you can only learn more.” is a favourite quote from Buckminster Fuller I uphold daily.

Madelize Bekker

I care deeply about how we build organisations where people can perform without having to change who they are.

At TetraMap I work with our global community to make TetraMap accessible to as many people as possible.

For me, strength lies in valuing our differences.

Brett Baker

As a seasoned IT professional, I’m passionate about creating software and bringing TetraMaps ideas to life.

I give most of my focus to the systems that support our facilitator network. I love that I can enable them to do more for their clients.

Working for TetraMap makes me appreciate nature,  which I embrace when I play Golf or go Scuba Diving.

John Brett

Yoshimi and I created TetraMap as a metaphor for the nature of behaviour to help people discover for themselves HOW people are different. It is a simple tool which also applies to the behaviour of systems and can help us develop eco-centric approaches mimicking the emergent evolution of Nature.

Yoshimi Brett

Alongside Jon, I co-created TetraMap. Now “retired” …we’re thrilled to have the space to crystallise lessons learned from TetraMap and to apply those lessons in support of Nature. Our intentions are to help leaders embrace the mindset that we ARE Nature. When we heal Nature, we heal ourselves.

Ruth Robinson

As General Manager and Certified Facilitators at TetraMap UK & Europe, I am the driving force behind business operations. which means I am responsible for budgets and forecasts, strategy, enquiries, supporting facilitators and collaborating with clients to unlock TetraMap’s transformative potential. With a keen eye for marketing, I like to ensure TetraMap shines bright.

Mark Doughty

As Director of TetraMap UK, drawing on extensive global experience in leadership, team, and organisation development, I bring a commercially grounded approach to applying TetraMap. My work focuses on helping leaders and teams communicate more effectively, collaborate with purpose, and use their differences both as a source of competitive advantage and to generate long-term organisational value.

Emma Mauger

My TetraMap journey began in 2016 when I certified as a facilitator – at the very inspiring Eden Project in Cornwall, UK. Less than three years later, I chose to go deeper and become an MTF. I’m constantly intrigued by how multifaceted TetraMap is as a learning tool – whether working one-on-one or in groups. Sharing TetraMap with others and learning alongside other people in our community are great sources of joy for me.

Helen Harris

I provide administrative support and assistance to Ruth for TetraMap UK & Europe. Being organised is key to my role and I love making sure all our facilitators have the right resources at hand and receive them promptly. The more I work with TetraMap the more I learn about myself and others.

Elaine Vinter

My background is PR and communications and I love to bring ideas and concepts to life. Story telling is a huge part of that and TetraMap is full of amazing stories! As a longtime fan of TetraMap, I want to share your stories and continue to promote our global community.

Andy Cocker

Andy Cocker works with leaders and teams to strengthen alignment, collaboration, and performance in complex environments. His international career spans the Americas, Europe, the Middle East, and China, including 13 years living in Ecuador. A former Honorary Consul, Andy brings a global perspective shaped by diplomacy, leadership, and cross-cultural work. Outside work, he enjoys sea swimming and time with his family.

Claudia Faletolu

Claudia Faletolu is a Māori organisational development and strategy practitioner based in Brisbane, working across Australia and Aotearoa New Zealand. With more than 20 years’ experience, she supports leaders and organisations to navigate complexity, strengthen culture, and build relationally healthy systems. Her work integrates Indigenous perspectives with leadership and whole-of-system change.

Graham Griffin

Graham Griffin is an organisational behaviour specialist and leadership practitioner based in the United Kingdom. With a background in learning, culture, and people development, he works with organisations to unlock human potential and strengthen leadership capability. Graham is also connected with the Global Kindness Institute, reflecting his strong belief in kindness as a strategic leadership practice. 

Burkhard Höhne

Burkhard Höhne brings more than four decades of international leadership and human resource experience in the financial sector. As a business coach, he focuses on the human side of organisations, helping leaders navigate complex change with reflection and resilience. A certified TetraMap facilitator since 2012, he values the framework’s emphasis on interdependence and diverse perspectives.

Ariel Pagdanganan

Ariel Pagdanganan helps people and organisations grow together. Through his work with Convergent Experience, he supports business growth while developing leaders and strengthening team capability. A Certified TetraMap Facilitator since 2018, Ariel works with teams to build psychologically safe environments where communication is clearer, collaboration is stronger, and people feel confident to contribute their best.

Ilona Ryan

Ilona Ryan is a nursing leader with 25 years’ experience across clinical practice, healthcare leadership, and nursing education. As Education Manager at St Vincent’s Private Hospital Melbourne, she leads clinical education teams and supports innovation in professional development. A certified TetraMap facilitator and mentor with the Australian College of Nursing, she is deeply committed to helping nurses realise their potential.

Karen Swinley

Karen Swinley is passionate about communication, relationships, and healthy workplace culture. She enjoys helping teams explore the different ways people think and work, building understanding and trust through practical frameworks. Karen values TetraMap for the simple, non-judgemental language it provides to strengthen collaboration and connection.

Raymond Yap

Raymond Yap is a leadership development and transformation specialist based in Singapore and a TetraMap Master Facilitator certified by the founders. Since 2007 he has worked with senior leaders across Asia in leadership, strategy, and organisational development. His perspective is shaped by 27 years of service in the Republic of Singapore Air Force before moving into consulting and executive coaching.

Jade Gibson

Jade Gibson is a Māori environmental scientist, systems thinker, and facilitator who works at the intersection of mātauranga Māori, ecology, and regenerative systems. Based on the East Coast of Aotearoa New Zealand, she supports communities and organisations to better understand the patterns of nature and apply them in human systems. Her work is grounded in kaitiakitanga, interdependence, and long-term resilience.

Kataraina Pipi 

Kataraina Pipi is a Māori leader and governance practitioner based in Aotearoa New Zealand. Her work focuses on strengthening relationships between organisations, communities, and whenua through kaupapa Māori values and leadership practice. Kataraina brings deep experience in cultural guidance, governance, and community development, supporting organisations to engage respectfully with Māori perspectives and long-term stewardship.

Heather Swain 

Heather Swain is a leadership and talent development specialist with more than 30 years of global experience, particularly in professional and financial services. She works with leaders and teams to strengthen self-awareness, trust, and collaboration, helping people understand how everyday behaviours shape culture and performance. Heather brings both British and Australian perspectives to her work.

Zibi Grodzki 

Zibi Grodzki helps organisations build stronger leadership, sales, and collaboration. Based in Poland, he has been working with TetraMap since 2008, delivering programmes for organisations including Deutsche Bank, Citibank, and Renault. Zibi works with teams to build trust, improve communication, and support culture change. More recently, he has been exploring how AI can support leaders in better understanding their teams and making more informed decisions.