The Tertiary Effect
How to Design the Transformation Visitors Carry Out the Door
Availability
Forthcoming late 2026.
Paperback and hardcover. We'll share how to get a copy when purchase opens.
About the book
Most experience design measures engagement and satisfaction, and almost never whether anything changed.
The Tertiary Effect is a working method for transformation design. It introduces the Tertiary Method™. Transformation isn't delivered to an audience. Visitors reach it themselves when the conditions are right.
A produced emotion is easy to make and easy to distrust. A change the visitor owns stays rare.
That owned change is what they tell someone about. Return visits and word of mouth move because the inner experience moved first. Advocacy beats engineered shareable moments.
Who it's for
- Museums and cultural institutions: turn a mission you believe in into change you can measure and defend to boards and funders, with integrity built into the design.
- Theme parks and themed entertainment: turn audiences into authors and advocates so connection to your world deepens with every visit, long after opening day.
- Brand and experiential work: build real advocacy and community instead of chasing captured content, without the legal and operational cost that comes with it.
- Immersive and location-based experiences: design ephemeral spaces that genuinely open people, where a discovery the visitor owns is the rare thing spectacle can't fake.
We can do better than satisfaction.
Questions
Common questions about the book
Who is The Tertiary Effect for?
Anyone who creates experiences meant to change people rather than just satisfy them. Museums and cultural institutions, theme parks and themed entertainment, brand and experiential work, immersive and location-based experiences. If you've built something and sensed the gap between what you made and what you hoped would happen, it's for you.
When can I get a copy?
The Tertiary Effect is forthcoming late 2026, in paperback and hardcover. We'll share how to get a copy when purchase opens.
Is the method in the book the same one you use with clients?
Yes. The book sets out the method. What an engagement adds is application: our hands on your specific project, systems, and team.