The Delta Developmental difference begins with who we are.

The research is clear, diverse perspectives inform more sustainable decision making.

Our team includes ethical and inclusive leaders from across industry sectors, with diverse cultural and professional perspectives who have led through an extraordinary range of crises.

Our experiences leading through the crisis will broaden your view of what’s possible, inform more sustainable decisions, and deepen your insight on execution.

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Dr. Stuart C. Lord


Adult developmental and performance consultant / Group facilitator / Author / Professor

Educator / Academic / Organizational development consultant / Diversity and culture in the workplace

Stuart Lord, the President, and CEO of Delta Developmental, organizational solutions for leadership development, is well versed in higher education administration and leadership, organization development, institutional diversity and inclusion, and business operations. He brings over 25 years of senior executive leadership in strategic planning, leadership development, and executive coaching.

In working with executive leaders and teams to increase effectiveness, Dr. Lord focuses on four key strategies: 1) Set the right direction and create meaningful work; 2) Engage all stakeholders and hold them accountable for performance; 3) Ensure that processes and systems facilitate focus and execution; 4) Lead effectively - maintain relationships of trust to achieve and sustain the desired result.

Dr. Lord’s most recent efforts have been focused on guiding universities and companies, including Interstate Restoration, FirstonSite, Wheelock College, Emergency Family Assistance Association, Dartmouth College, The Kingston Bay Group, and the Fox Institute. His work in these roles has yielded transformative results, including leveraging assets, enhancing institutional diversity and inclusion, exceeding financial revenue targets, and helping executive leaders address their most important leadership needs.

In higher education he has served as University President, Interim President, Deputy to the President, Associate Provost, Vice President for Diversity and Inclusion, Associate Dean of Academic Affairs, University Dean, and Executive Director for the White House President’s Summit on America’s Future in the Clinton Administration.


Rob McNamara

Co-Founder / Principal

Adult developmental and performance consultant / Group facilitator / Author / Professor

Rob McNamara is an author, advisor, and leadership coach with expertise in adult development and human performance. He is a co-founder of the advisory firm Delta Developmental. Rob serves on faculty at the Ivey School of Business' LIFT Advanced Coaching Program and is a former Harvard University Teaching Fellow. McNamara currently advises, trains, and coaches a broad range of initiatives for individuals, organizations, and governments navigating complex civilization-wide problems.

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Gabe Menegale Wilson, M.ED


Author / Professor / Coach / Consultant

Gabriel studied adult developmental psychology and leadership through Stanford’s Masters program in Policy, Organization, and Leadership Studies (POLS).  He was a lecturer at Stanford University for the innovative class, “Designing Your Life,” in which he taught undergraduate and graduate students the principles of design thinking as applied to personal and professional development.  He is a certified integral facilitator and an associate for Delta Developmental, a leadership and organizational development consultancy. And, last but not least, he is a practitioner of meditation in the Zen lineage through the Two Arrows Zen Center.

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Samra J. Coote


Samra J. Coote serves as an Executive Coach at Delta Developmental. She believes that true leadership is achieved by leveraging your power through service. This mantra serves as the guiding philosophy for her work in corporate and nonprofit administration, external affairs, and public relations. She is a subject matter expert at strategic planning, leadership development, and diversity, equity, and inclusion (DEI). Samra’s sweet-spot is building coalitions, leveraging organically-built relationships and friend-raising. As a woman of influence, she leverages her large network to advocate on behalf of the organizations that she represents. 


After graduating from Iona College in New Rochelle, New York with a Bachelor’s degree in Communications-Public Relations, Samra made a concerted effort to live a life of purpose. Samra has a heart and passion of philanthropy. This is demonstrated through memberships in her social and civic engagements. She also fosters her sisterly ties by being a member of Alpha Kappa Alpha Sorority, Incorporated.


Samra believes that “the best was to find yourself is to lose yourself in the service of others”. Her senior leadership roles in various community, civic and philanthropic organizations demonstrate her unyielding commitment to community service. She is the immediate Past President and 2nd Vice President-Program Chair of the Magnolia (GA) Chapter of The Links, Incorporated, Past Membership and Fundraising Chairwoman for Jack & Jill of America-North Suburban Atlanta Chapter, and a Past Board Member of EduPAC Atlanta. Additionally, she has served as a mentor for the Coretta Scott King Young Woman’s Leadership Academy and the Tuskegee Airman Global Elementary School. She also holds/or has held memberships with the Atlanta Business League, Central Atlanta Progress’ PR/Marketing Committee, OnBoard, and the Public Relations Society of America.

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Tim Lilienthal


Tim Lilienthal is an executive leadership coach and certified Integral facilitator who works with organizational leaders to create high-performing, equitable teams and team cultures.  

For nearly two decades, Tim was a national leader with the country’s largest faith-based civil rights network, where he built and led efforts to engage high-level government officials and leaders in the private sector around pressing issues facing low-income Americans. In his role, Tim also consulted and trained hundreds of organizational leaders and staff members on topics including leadership development, team-building, organizational change, strategy, fundraising, and communications. 

In addition to his work with Delta, Tim is also an Associate with Gilburg Leadership, Inc., a consulting firm that supports leaders and their teams in understanding, valuing and benefiting from their greatest resource - their people.

Tim has a deep passion for helping people understand that they are the architects of many of their own experiences, and that they have much more creative power than they realize.

Tim is a practitioner of meditation in the Zen lineage through the Two Arrows Zen Center. He is a husband and father of two children, and when not doing this work or spending time with his family, you’ll likely find him running on trails around his home in western Massachusetts.


Kageni Pierce


Kageni Pierce, leadership coach, facilitator and relationship management expert. 


Organizations must grow their brightest talent to generate greater value every day if they are to survive in today’s competitive business climates. I work with leaders to build thriving ecosystems in their organization, the teams they lead and the broader communities they serve and depend on.


I believe change always starts with vision. Seeing new possibilities and engaging people to readily adopt and contribute is at the heart of leading organizations and moving our world forward. I help leaders stand with dignity in expressing bold visions and inspiring the people to create more value around them. 


Studying business at the University of Nairobi lead me to the United States to pursue an MBA program. I’ve worked in marketing, sales and operations in a number of organizations but my passion resides in helping leaders leverage their personal and professional relationships to advance careers and create greater organizational value. 


What’s the change you want to see in the world? Let’s put our best thinking to the test to see how we can get you from here to there. 

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Joe-Joe McManus


 Dr. Joe-Joe McManus began his career in higher education as a faculty member at Florida A&M University (FAMU). An educational innovator, Dr. McManus has lectured, served on panels, presented, and consulted in the U.S. and internationally for nearly three decades. His experience includes faculty, staff and administration roles, having served at an HBCU, an Ivy League institution, a state university, a major urban university system, a religious college, and an international university. As a consultant, he has worked with university presidents and Chief Diversity Officers (CDO), corporate CDO’s, and done extensive consulting and leadership development work across sectors. Most recently, McManus served as Chief Diversity Officer at California State University-San Marcos. 

Currently, McManus serves on the Board of Advisors for E3: Education, Excellence & Equity, as an Expert Panelist for the Global Diversity & Inclusion Benchmarks (GDIB), and as a member of the Diversity Community Exchange (DiCE) Group for which he edited the book, The Diversity Calling. Previously, McManus served on the Boards for the Center for Culturally Proficient Educational Practice, the Diversity Collegium, and the National Association for Multicultural Education (NAME). 

A first-generation college student, McManus earned his B.S. in Psychology from Florida Institute of Technology, an M.A. in Multicultural Education at Alliant International University, and his Ph.D. in Educational Leadership from Florida A&M University. Dr. McManus also completed the National Association for Diversity Officers in Higher Education (NADOHE) Standards of Professional Practice Institute as a member of the inaugural cohort, served on the NADOHE President’s Task Group on Charlottesville, and co-chaired the Southern California Chapter of NADOHE. 


Scott Zimmerman


Scott’s curiosity, wisdom, and passion for reaching deep down into the heart of a person’s intentions allow him to help leaders move beyond the boundaries of what they thought was possible. His deep curiosity encourages people to get outside their comfort zones and develop the discipline to deliver on promises. Scott’s innate ability to sense what lies beneath words, see through masks, and navigate extremely sensitive or explosive situations, helps leaders make choices that accelerate performances and inspire transformation.

Scott’s leadership capabilities and business acumen were honed at General Electric — one of Fortune’s “Most Admired Companies.” Beginning as a salesperson, Scott was promoted six times in nine years to join the top 1% of executives. In 2006, he won the GE Chairman’s Imagination Breakthrough award — an honor bestowed on an individual who developed an idea capable of generating more than $100M of incremental revenue.

Following GE, Scott’s subsequent business leadership roles saw him accelerate organizational scaling by tapping the latent potential in culture, leadership, and team operations to the tune of nearly $1B in value creation. In each setting, he reshaped the organization and reimagined their solutions, creating companies capable of creating exceptional experiences for customers.

Scott earned his BSBA from the John M. Olin School of Business at Washington University in St. Louis and has held board and strategic advisory roles for many national, regional and local organizations, including the Young Presidents’ Organization. He received YPO’s signature Terry Plochman award in 2016 for his work transforming CEO forum practices. In 2019, he was selected to join YPO’s International Forum Committee where he is focused on co-creating a framework and practices to quickly scale trust.

Scott lives in Tampa, Florida with his wife, their three children, and their golden retriever. When not engaged in accelerating client successes, he can most often be found out on the water boating with his family or kiteboarding.


Carole Griggs, Ph.D.


Carole Griggs, Ph.D. is an executive coach, leadership development consultant, international speaker, university professor, author/writer, and developer of transformative technology tools focused on human potential and consciousness evolution. She is currently coaching and consulting with leaders and companies nationally and internationally at Apple, Google, Google X, Wing, Waymo, Tradeshift and other companies from start-up, to mid-level, and larger publicly traded. 


Carole is a pioneer and leader in the areas of professional coaching, human potential, and consciousness evolution, and the intersection and integration of technology. Carole is the founder and CEO of Carole Griggs Enterprises, LLC ( She is also co-founder of iConscious: accelerating human potential ( and the iConscious Human Development model, a comprehensive and integrative meta-framework researched and developed to accelerate the process of maximizing full human potential both individually and collectively. Carole has been an integral part of Loving AI (, an important Artificial Intelligence research project that is a part of the IBM Watson X-Prize Competition. Dr. Griggs is a professor and course developer for John F. Kennedy’s Master’s program in Consciousness and Transformative Studies department, and is the author of Space to See Reality: A New Model for ProfessionalCoaches, and iConscious: Accelerating Human Potential.


Dr. Carole Griggs holds a Doctorate degree (Ph.D.) in Professional Coaching and Human Development, a Master’s degree in Education, and a Bachelor's degree in Science. Carole is currently based in the San Francisco Bay Area.

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Spencer Honeyman


Spencer Honeyman is a coach, organizational facilitator, and consultant committed to helping clients leverage their larger personal and institutional authenticity for better strategy development and execution. 

Honeyman brings a decade of rigorous training in the art of facilitation. His skills navigating group dynamics help teams build sustainable cultures and partnerships.  Spencer’s experience running a boutique design firm specializing in building custom environments to foster human potential, well-being, and productivity makes his contributions unique and scalable. 

With Honeyman’s direction organizations are better able to recognize how the outer environment catalyzes a culture’s strengths.  Whether you’re a leader seeking to impact your individual skills, you’re wanting to up-level your leadership team’s capacities or looking to scale an organization into new directions, Spencer is a curious guiding force to accelerate your progress. 

Spencer lives with his wife and son in Wildcat Canyon of the Bay Area, CA. He can often be found on his yoga mat, writing or playing music, and seeking greater truth and joy in work and play.

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Dave Schoof


Dave is an international leadership consultant who specializes in helping leaders and teams build on their capabilities and move to their next level of performance and effectiveness.  He specializes in personal and professional development for senior leaders, executive and client-facing team development and helping leaders navigate complexity.

Dave brings over 24 years of experience with corporate, non-profit and government sectors, working with clients across a wide spectrum of industries, including finance and insurance, FMCG, consulting, pharmaceuticals, technology and IT, defense, aerospace, science and telecommunications.  Dave works with clients across Europe, the Americas and Asia.  He has an international reputation for working in highly sensitive circumstances with impeccable discretion.

Dave has developed organization-wide internal coaching programs for the US government and multiple global consultancies. In that capacity, he helped each entity articulate its business case for coaching, create the necessary structures and processes for success and imbed a coaching culture within the organization.

During a 19-year career at the US government, Dave was a specialist in national security issues.  He covered most parts of the world from Washington, as well as living overseas.  As he moved into the executive levels, he became increasingly interested in leadership issues – and that ultimately led him to a new career in coaching and working with leadership teams.

Previously, Dave was on the faculty for the US Presidential Management Fellows Program, a highly acclaimed federal program designed to bring select graduate students into management positions in the federal government.

Dave is a Master Certified Coach (MCC) from the International Coach Federation and a certified an Integral Master Coach™ from Integral Coaching Canada, where he has served on the board for certifying coaching students.

A long-time meditator, Dave has led retreats and meditation classes. He enjoys finding practical ways to operationalize the wisdom from various traditions into his work with leaders.  Dave is married and lives in a small village near Lausanne, Switzerland where he enjoys hiking and photography.  He is re-living the challenges of learning by being a beginner in horseback riding and the French language.


Zachary Stein


Zachary studied philosophy and religion at Hampshire College, and then educational neuroscience, human development, and the philosophy of education at Harvard University. While a student at Harvard, he co-founded what would become Lectica, Inc., a non-profit dedicated to the research-based, justice-oriented reform of large-scale standardized testing in K-12, higher-education, and business.

He has published two books.  Social Justice and Educational Measurement was based on his dissertation and traces the history of standardized testing and its ethical implications. His second book,  Education in a Time Between Worlds, expands the philosophical work to include grappling with the relations between schooling and technology more broadly. He also writes for peer-reviewed academic journals across a range of topics including the philosophy of learning, educational technology, and integral theory. His work has appeared in a variety of journals including, American Psychologist, New Ideas in Psychology, Mind, Brain, and Education, Integral Review, and the Journal of Philosophy of Education. 

Teaching is one of his greatest pleasures, which he has enjoyed doing at Harvard University,  Meridian University, and JFK University. His invited speaking engagements span a wide range of venues, from metamodern podcasts to the National Security Agency and off-the-grid spiritual retreat centers. Partial curriculum vitae: CV_Stein_Winter2015

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Diane Musho Hamilton


Diane is an award-winning mediator, and a uniquely gifted, playful, and awake group facilitator, consultant and teacher of Integral Spirituality and Zen. She is a lineage holder in the Soto Zen tradition, and has collaborated with the Integral Institute and Ken Wilber since 2004, developing the Integral Life Practice seminars and the Integral Spiritual Experience global events.Diane is well known as an innovator in facilitating group dialogues, especially conversations about culture, religion, race and gender relations. She was the first Director of the Office of Alternative Dispute Resolution for the Utah Judiciary, where she established mediation programs throughout the court system. She is the recipient of several prestigious awards for her work in this area, including the Peter W. Billings Award and the UCCR Peacekeeper Award.She has studied and practiced Buddhadharma for over 25 years, beginning at Naropa Institute in 1984 with the teachings of Choygam Trungpa Rinpoche. She was ordained as a Zen priest in 2003 and received dharma transmission from her teacher, Genpo Roshi, in 2006. She is a facilitator of Big Mind Big Heart, a process developed by Roshi to bring the insights of Zen to Western audiences.With her husband, Zen teacher and lawyer Michael Mugaku Zimmerman, she established Two Arrows Zen, a center for the study and practice of Zen. They maintain two facilities – an urban center in downtown Salt Lake City, and a rural retreat center in the red rocks of Southern Utah where traditional Zen meditation is joined with nature-based practices and shamanic disciplines.With extraordinary depth and insight, Diane encourages us to consciously evolve beyond old and limited ideas of who we are so that we might discover our own unique expression of wisdom and of compassion in this time. She is the author of Everything is Workable, a zen approach to conflict resolution, and The Zen of You and Me, both published by Shambhala Publications. She is also a contributor to Harvard Business Review.


Catherine Wong


Educational Leader/ Changemaker/ Social Justice Educator/ Career Coach/ Mentor.

Catherine Wong is a highly recognized diversity, equity, and inclusion practitioner-scholar, whose career spans K-12 through higher education. Ms. Wong also assists non-profit organizations to develop and implement strategic action plans that are co-constructed with the very youth and community it intends to serve. Her effectiveness is the result of her direct ability to advocate from the heart, and to be unwavering in supporting youth and early career educators/professionals of color --all while engaging with the Aloha spirit of community and care, drawn from her Chinese Hawaiian cultural background.


At the core of Ms. Wong’s approach is strengthening the intrinsic link between culturally responsive teaching and antiracism, working toward a decolonized mindset, and engaging in collective leadership practices. She creates brave and vital spaces for dialogue and action planning. In this way, students/stakeholders become empowered to pivot from hierarchical decision-making to collaborative action planning. With Ms. Wong’s guidance groups develop innovative skills to mobilize informal and formal networks of allied support that allow for surviving and thriving even when faced with the most challenging of circumstances. 

Currently, Ms. Wong is the Director of Equity Implementation for Leadership Brainery, a Massachusetts nonprofit organization committed to preparing diverse and first-generation college students for postgraduate education and high-wage careers. Most recently, she was the Director of Urban Outreach Initiatives, Boston College. Ms. Wong also serves on the; Boston Public Schools Equity Roundtable; Executive Committee, Consortium of Colleges and Universities, Institute for the Recruitment of Teacher (IRT), Board of Advisors for E3, Education, Excellence and Equity; and, as an Expert Panelist for the Global Diversity, Equity and Inclusion Benchmarks (GDEIB).