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person1960s-2012

Arthur Jensen

Disciplines:
psychology
psychology/psychometrics

Summary

American educational psychologist whose 1969 paper arguing that compensatory education programs had failed — and that heritability might explain racial IQ gaps — made him one of the most controversial figures in academic psychology.

Core Contribution

How Much Can We Boost IQ and Scholastic Achievement? (1969): a 123-page Harvard Educational Review article arguing that Jensen Effect: the finding that group differences in IQ are most pronounced on tests most highly g-loaded. Heritability of IQ: extensive research establishing high heritability within populations. His work on the race-IQ question attracted both serious engagement and accusations of scientific racism.

Key Spikes & Highlights

  • His 1969 HER paper triggered the largest controversy in academic psychology's history — he was physically attacked at lectures, his classes were disrupted, and he received death threats. He continued publishing for 40 more years.
  • Was distinguished from purely political race theorists by his genuine psychometric rigor — even critics acknowledged his technical competence while disputing his conclusions.

Notable Works & Achievements

Educability and Group Differences

Bias in Mental Testing

The g Factor

Historical Influences

Francis Galton Hans Eysenck

Intellectual Lineage

Psychometrics Behavioral Genetics

Contemporaries & Peers

Hans Eysenck Sandra Scarr

Minds Influenced

Psychometrics Charles Murray

Intellectual Posterity

IQ ResearchPsychometrics

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