Traits & personality

Not a medical test — for research and educational use only

Yeliztli analyses consumer genotyping-array data (23andMe / AncestryDNA), which is not a clinical-grade test. Results are not diagnostic, are not clinically validated, and must not be used to make medical decisions. Array data is especially unreliable for rare, disease-causing variants. Always confirm any finding with an accredited clinical laboratory and discuss it with a qualified clinician or genetic counsellor before acting on it. See the Intended use & disclaimers page for the details and the evidence behind this warning.

This module explores cognitive, personality, and behavioural traits. The genetics here is weak and probabilistic — it's the most speculative module, and it's labelled and capped accordingly.

What it looks at

• Cognitive ability & educational attainment — polygenic scores (Okbay 2022, Savage 2018)
• Big Five personality — one SNP each for neuroticism, extraversion, openness, agreeableness, conscientiousness
• Behavioural traits — CADM2 (risk tolerance), a DRD4 proxy (novelty seeking)

What you'll see

Categorical levels (no numeric scores) and per-SNP findings, using deliberately associative language ("associated with", never "predicts" or "causes"). Polygenic outputs are labelled research-use-only, and percentiles are withheld when the score isn't calibrated.

Research use only — and capped

Every finding here is capped at a moderate (2-star) evidence rating. The personality SNPs have tiny effects that explain almost none of the variation between people, and the behavioural results are non-deterministic. Don't read anything definitive into them.

Good to know

• The DRD4 novelty-seeking marker is a low-confidence proxy for a repeat variant, not direct genotyping.
• The cognitive polygenic scores come from European-ancestry studies; an ancestry-mismatch warning is shown when relevant.