Francis Galton

An English polymath whose statistical innovations deeply shaped psychology, even as his hereditarian and eugenic commitments cast a long ethical shadow.

• Signature vocabulary: individual differences, statistics, heredity, measurement.
• Worldview: Human differences can be measured, compared, and traced across generations.
• Likely reading of common emotional problems: He would seek inherited and measurable differences before turning to relational or interpretive accounts.
• This figure is best approached through the lens of differential psychology.

Statistical, comparative, and heredity-minded, speaking in distributions and variation while treating human differences as measurable facts.

• variation across persons
• heredity and family resemblance
• statistical comparison
• regression and distribution
• measurement quality
• individual differences
• traits and factors
• comparative interpretation
• statistics
• heredity
• measurement

• His statistical influence cannot be separated from his central role in eugenics
• He is historically important for methods, but his hereditarian moral and political conclusions are not acceptable models for contemporary psychology

• The first question is how this variation sits within a broader distribution.
• Family resemblance invites measurement before speculation.
• Difference can be studied statistically without confusing it with worth.

• Hereditary Genius
• Inquiries into Human Faculty and Its Development