Arthur Jensen
A controversial Berkeley psychologist whose research on intelligence and heredity sparked fierce public and academic debate for decades.
1923–2012 (age 89)·American psychologist and writer·Birthday: August 24·The Greatest Generation
Biography
Arthur Jensen was a figure who could not be ignored. A tenacious researcher at the University of California, Berkeley, he dedicated his career to psychometrics—the measurement of mental abilities. His work, grounded in statistical analysis, led him to increasingly contentious conclusions about the nature of intelligence. In 1969, he published a monumental article in the Harvard Educational Review arguing that genetic factors played a substantial role in average IQ score differences between racial groups and that compensatory education programs were therefore limited. The article detonated a firestorm. Jensen was protested, denounced as a racist, and his lectures were sometimes shut down. He insisted he was merely following data where it led, defending academic freedom and the study of unpopular ideas. For the rest of his career, he continued to publish complex, data-heavy works on intelligence, remaining a polarizing symbol in the nature-versus-nurture debate and forcing uncomfortable conversations about science, society, and bias.
The Greatest Generation
1901–1927
Grew up during the Depression, fought World War II, and built the postwar economic boom. Defined by shared sacrifice, institutional trust, and a belief that hard work and loyalty would be rewarded.
Arthur was born in 1923, placing them squarely in The Greatest Generation. The events that shaped this generation — world wars, depression, and rapid industrialization — shaped the world they entered and the choices available to them.
#1 When Arthur Was Born
The biggest hits of 1923
#1 Movie
The Covered Wagon
Arthur's Life & Times
The world at every milestone
1923Born
The Great Kanto earthquake devastates Tokyo
President: Calvin Coolidge"Yes! We Have No Bananas" — Billy Jones
1928Started school
Alexander Fleming discovers penicillin; Mickey Mouse debuts
President: Calvin Coolidge"Ol' Man River" — Paul WhitemanBest Picture: Wings
1936Became a teenager
Jesse Owens wins four golds at the Berlin Olympics
Gas: $0.19/galPresident: Franklin D. Roosevelt"The Way You Look Tonight" — Fred AstaireBest Picture: The Great Ziegfeld
1939Could drive
World War II begins; The Wizard of Oz premieres
Gas: $0.19/galMin wage: $0.30/hrPresident: Franklin D. Roosevelt"Over the Rainbow" — Judy GarlandBest Picture: Gone with the Wind
1941Could vote
Pearl Harbor attack brings the US into WWII
Gas: $0.19/galHome: $3,060Min wage: $0.30/hrPresident: Franklin D. Roosevelt"Chattanooga Choo Choo" — Glenn MillerBest Picture: How Green Was My Valley
1944Turned 21
D-Day: Allied forces land at Normandy
Gas: $0.21/galHome: $3,400Min wage: $0.30/hrPresident: Franklin D. Roosevelt"Swinging on a Star" — Bing CrosbyBest Picture: Going My Way
1953Turned 30
DNA structure discovered by Watson and Crick
Gas: $0.27/galHome: $8,750Min wage: $0.75/hrPresident: Dwight D. Eisenhower"Song from Moulin Rouge" — Percy FaithBest Picture: From Here to Eternity
1963Turned 40
JFK assassinated in Dallas; Martin Luther King's 'I Have a Dream' speech
Gas: $0.31/galHome: $13,100Min wage: $1.25/hrPresident: Lyndon B. Johnson"Sugar Shack" — Jimmy Gilmer & The FireballsBest Picture: Tom Jones
1973Turned 50
US withdraws from Vietnam; Roe v. Wade decided
Gas: $0.39/galHome: $22,100Min wage: $1.60/hrPresident: Richard Nixon"Tie a Yellow Ribbon Round the Ole Oak Tree" — Tony Orlando & DawnBest Picture: The Sting
1983Turned 60
Internet adopts TCP/IP, creating the modern internet
Gas: $1.16/galHome: $57,700Min wage: $3.35/hrPresident: Ronald Reagan"Every Breath You Take" — The PoliceBest Picture: Terms of Endearment
1993Turned 70
European Union officially established
Gas: $1.11/galHome: $86,600Min wage: $4.25/hrPresident: Bill Clinton"I Will Always Love You" — Whitney HoustonBest Picture: Schindler's List
2003Turned 80
US invades Iraq; Human Genome Project completed
Gas: $1.59/galHome: $146,000Min wage: $5.15/hrPresident: George W. Bush"In Da Club" — 50 CentBest Picture: The Lord of the Rings: The Return of the King
2012Died at 89
Curiosity rover lands on Mars; Sandy Hook shooting
Gas: $3.64/galHome: $143,200Min wage: $7.25/hrPresident: Barack Obama"Somebody That I Used to Know" — GotyeBest Picture: Argo
Key Achievements
- Published the highly influential and controversial 1969 paper 'How Much Can We Boost IQ and Scholastic Achievement?' in the Harvard Educational Review.
- Was a leading proponent of the g factor theory of general intelligence, arguing for its high heritability.
- Authored the seminal book 'Bias in Mental Testing,' which argued that standardized IQ tests were not culturally biased against minority groups.
Did You Know?
He was a student and protégé of the influential psychologist Hans Eysenck at the University of London.
Before focusing on intelligence, his early research was on verbal learning and memory.
His 1969 article reportedly led to the largest volume of correspondence in the history of the Harvard Educational Review.
““The possible social consequences of this problem are so charged with emotion that the mere asking of questions about it is often regarded as an outrage.””
