How Diahu assessments work

Diahu assessments are rule-based self-report questionnaires built on published psychological frameworks such as the Big Five, adult attachment theory and career-anchor research. Every answer maps to one or more dimension weights; dimension totals are converted to standard scores and percentiles against stored norms, and a deterministic rule set selects the matching result type. No machine-learning model decides your result, which keeps every score reproducible and auditable. Content is written separately for eight market locales rather than translated, and questions, result copy and FAQs only go live after passing an editorial review gate. Diahu results are designed for self-reflection and entertainment: they describe current tendencies, not fixed traits, and they are not medical, diagnostic or therapeutic instruments.

Where the questions come from

Each assessment starts from a published framework: the Big Five model for personality, the Experiences in Close Relationships tradition for attachment styles, Schein's career anchors for career direction, and comparable open literature for the remaining catalogs. Items are rewritten in plain language for each market and reviewed for cultural fit before release.

Question banks are versioned. When an item changes meaningfully, a new bank version is created so historical results remain interpretable.

How scoring works

Answers carry dimension weights. We total raw scores per dimension, convert them to standard scores and percentiles against stored norm groups where available, and select a result type through a deterministic rule set. The same answers always produce the same result.

Result pages show raw, standard and percentile values per dimension so you can see exactly how a result was derived.

Scientific boundaries — including the MBTI debate

Type-based instruments such as the MBTI are popular but academically contested: test-retest studies show a meaningful share of people receive a different type on retake, and dichotomous types compress continuous traits. We publish type-style results because they are useful conversation starters, while showing the underlying dimensional scores that carry more information.

All results describe current self-reported tendencies. They are not clinical evaluations, and no Diahu result should be used for medical, hiring, academic or financial decisions.

Localization is rewriting, not translation

Questions, result copy, examples and FAQs are authored per market by locale writers. Where a locale is not yet covered, the platform falls back along an explicit locale chain instead of showing machine translation.

References

1. Big Five framework. McCrae, R. R., & Costa, P. T. (1987). Validation of the five-factor model of personality across instruments and observers. Journal of Personality and Social Psychology, 52(1), 81–90.
2. Adult attachment. Brennan, K. A., Clark, C. L., & Shaver, P. R. (1998). Self-report measurement of adult attachment: An integrative overview. In J. A. Simpson & W. S. Rholes (Eds.), Attachment theory and close relationships (pp. 46–76). Guilford Press.
3. MBTI reliability debate. Pittenger, D. J. (2005). Cautionary comments regarding the Myers-Briggs Type Indicator. Consulting Psychology Journal: Practice and Research, 57(3), 210–221.
4. Love languages evidence review. Impett, E. A., Park, H. G., & Muise, A. (2024). Popular psychology through a scientific lens: Evaluating love languages and the five love languages claims. Current Directions in Psychological Science, 33(2).