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What happens when engineers, psychologists, and Enneagram coaches meet in one person? You get Danielle Fuller—founder of Scientific Enneagram, expert in data, and a compelling voice at the intersection of systems theory and personality work.

In this episode, we dive deep with Danielle into the scientific validity of the Enneagram: What counts as science? Can the Enneagram ever be falsifiable? How does it overlap with models like Big Five, attachment theory, and ego development? And what kind of research might meaningfully elevate Enneagram discourse?

We also explore why the Enneagram may resist quantification—because it’s aimed at motives, not behaviors—and why that doesn’t disqualify it as a tool for serious study. Danielle brings a unique blend of logic and curiosity, and we’re thrilled to share this rich, thoughtful conversation.

Find Danielle at @scientificenneagram and at scientificenneagram.com.