Mathematician:Jacob Cohen

Mathematician

American psychologist and statistician best known for his work on statistical power and effect size.

This helped to lay foundations for current statistical meta-analysis and the methods of estimation statistics.

Nationality

American

History

• Born: April 20, 1923
• Died: January 20, 1998

Theorems and Definitions

• Cohen's $d$
• Cohen's $h$
• Cohen's Kappa Statistic

Definitions of concepts named for Jacob Cohen can be found here.

Publications

• 1960: A coefficient of agreement for nominal scales
• 1968: Weighted kappa: Nominal scale agreement provision for scaled disagreement or partial credit
• 1968: Multiple regression as a general data-analytic system
• 1988: Statistical Power Analysis for the Behavioral Sciences (2nd ed.)
• 1992: A power primer
• 1992: Statistical power analysis
• 1994: The Earth is round ($p < .05$)