How did you verify the accuracy of your content?

We drafted our content over a two-year period based on our experience using the Enneagram as a tool in our personal lives and careers, extensive research using the many excellent Enneagram books available, analyzing data from hundreds of volunteers who took early versions of our test, and conducting interviews and user testing with individuals representing every type, subtype, and instinct. Countless hours and rounds of direct feedback from a diverse array of people spanning the entirety of the Enneagram helped us further refine our work; we thank some of the most crucial contributors here. We are always iterating and improving and welcome your feedback at hello@blueprintapp.co.