Genetics, optional

Genetics: one honest signal, deliberately limited.

Only one trait has a published, well-powered genetic score: how easily someone gets upset under stress. Inside Left computes that one, the same way every time, and says what it can't tell you.

The normal way

Choose from 280 genetic profiles

Synthetic genomes, 35 for each of eight origins, from lower to higher than average. The player's likely origin is suggested from their nationality, and the report shows it at lower, around and higher side by side, so you see how little genetics would move the picture. Never picked from the interview, never the player's data, and marked everywhere: not the player's DNA.

The exception

The player's own DNA file

The file they already have from 23andMe, AncestryDNA or MyHeritage, with their own, separate consent. Read in memory, scored, and not kept.

After the legal review

A lab kit

You order the kit; the case tracks it. The interview goes ahead meanwhile, and the report waits until you upload the lab's result.

North-west European
Nordic (Finnish)
Southern European (Iberian, Italian)
West African
East African
Latin American
East Asian
South Asian
loweraround averagehigher

The origin is suggested from the player's nationality, which is not the same as ancestry; you can change it. The level is never taken from the interview: a profile picked to match what the player said would only echo it and look like a second, independent source.

How the score is made

  1. ReadA consumer DNA chip reads about 600,000 markers, but only a fifth of the score.
  2. Fill inThe missing variants are imputed inside our own engine, from a public reference panel (1000 Genomes). Nothing goes to an outside service.
  3. ScoreOne published score (PGS Catalog PGS001996), fixed formulas, never AI.
  4. Say its limitsA coarse band, never a percentile; a few percent of the differences between people; weaker outside European ancestry. It never outweighs what the player says.

How well the filling-in works

Measured on 1000 Genomes people held out of the reference panel: their chip-only data, filled in by the engine, against their true complete score.

People held outFilled-in vs. true scoreChip only vs. true score
European (100)0.980.48
African (60)0.940.53
Latin American (40)0.990.54
East Asian (40)0.970.62
South Asian (40)0.970.54

Correlations (r). This is agreement with the published score, not with personality: the score itself explains only a few percent of the differences in neuroticism between people, which is why it never outweighs the interview.

Evidence first. Genetics, if you want it.