Francis Galton IQ

Lewis Terman estimated about 200 in 1917 from Galton's childhood letters and early achievements, putting his mental age at about twice his real age. Galton never took a test. Adjusting by about 22 points for the Flynn effect gives roughly 178, so LifeScore uses 178 to 200.

Yes. Galton was Darwin's half-cousin, and Darwin's On the Origin of Species (1859) pushed him to study how abilities pass through families. That led to his work on heredity and, later, to the statistical idea of regression to the mean.

He helped found statistics and psychology as measuring sciences. He introduced fingerprint classification, drew early weather maps, popularised the questionnaire and developed correlation and regression. He also coined 'eugenics', and that idea did lasting harm. Both sides are part of his record.

Lewis Terman, who revised the Stanford-Binet test, published an estimate of Galton's childhood IQ in 1917. He read Galton's letters and judged what an average child could do at each age.

A letter Galton wrote at age four says he could read any English book, recite Latin forms and add, and Terman put his mental age at about twice his real age.

That is a ratio estimate from the old scale, so LifeScore also gives a Flynn-adjusted figure near 178 and uses a range of 178 to 200.

Galton believed that if something varied, it could be measured, and then its pattern could be studied. He measured head size, reaction time, sight, hearing and even the effectiveness of prayer, always looking for a distribution.

What supports it

• Terman (1917) estimated his childhood IQ at about 200 from his early letters and records.
• He wrote at age four that he could read any English book and recite Latin forms.
• He developed fingerprint classification, early weather maps and the ideas of correlation and regression.

What it cannot prove

• Terman worked from a small number of letters, written to relatives as a small child.
• The estimate sits on the old ratio scale, which runs higher than modern deviation IQ.
• Galton's promotion of eugenics shows that ability and sound judgement are not the same thing.

Francis Galton's IQ is represented here by a retrospective estimate of 180+, not a verified test result. Francis Galton is best known for exceptional measurement. The useful question is what the surviving evidence shows, not whether a precise modern score can be recovered.

Tireless measurer and collector of data. Tried to count anything that could be counted, from fingerprints to weather to human ability.

The dominant archetype here is The Quantifier. This archetype shapes decision patterns: what feels natural, what creates friction, and what blind spots tend to emerge.

Estimated IQ is 180+. This is a rough estimate based on documented accomplishments and contemporary accounts, not a literal measurement.

Galton wrote a letter at age four saying he could read any English book and recite 52 lines of Latin poetry.