Enneagram Assessment

The full psychometric documentation behind a widely used Enneagram test. Covers test design, reliability, content and factorial validity, and the demographic patterns found across respondents, with the correlation tables included in full.

Truity Psychometrics

Answers the question every newcomer asks: is there any evidence behind this? Summarizes the published research on the Enneagram, what it has established so far, and where the gaps still are.

Anna Sutton

Argues that a questionnaire result is a starting point, not a verdict. Looks at what assessments can and cannot tell you, and how to fold test results into a longer process of recognizing your own type.

Dirk Cloete and Lucille Greeff