Table 1

Relative Ranking of Races on Diverse Variables
Variable Orientals Whites Blacks
Brain size
Autopsy Data cm3 equivalents 1,351 1,362 1,223
Endocranial volume (cm3) 1,415 1,362 1,268
External head measurements (cm3) 1,356 1,329 1,294
Cortical neurons (billions) 13.767 13.665 13.185
Intelligence
IQ test scores 106 100 85
Decision times Faster Intermediate Slower
Cultural achievements Higher Higher Lower
Maturation rate
Gestation time ? Intermediate Earlier
Skeletal development Later Intermediate Earlier
Motor development Later Intermediate Earlier
Dental development Later Intermediate Earlier
Age of first intercourse Later Intermediate Earlier
Age of first pregnancy Later Intermediate Earlier
Life span Longer Intermediate Shorter
Personality
Activity level Lower Intermediate Higher
Aggressiveness Lower Intermediate Higher
Cautiousness Higher Intermediate Lower
Dominance Lower Intermediate Higher
Impulsivity Lower Intermediate Higher
Self-concept Lower Intermediate Higher
Sociability Lower Intermediate Higher
Social Organization
Marital stability Higher Intermediate Lower
Law abidingness Higher Intermediate Lower
Mental health Higher Intermediate Lower
Administrative capacity Higher Higher Lower
Reproductive effort
Two-egg twinning (per 1,000 births) 4 8 16
Hormone levels Lower Intermediate Higher
Size of genitalia Smaller Intermediate Larger
Secondary sex characteristics Smaller Intermediate Larger
Intercourse frequencies Lower Intermediate Higher
Permissive attitudes Lower Intermediate Higher
Sexually transmitted diseases Lower Intermediate Higher
Note. From Race, Evolution and Behavior (p. 5), by J.P. Rushton, 1995, New Brunswick. NJ: Transaction. Copyright 1995 by Transaction Publishers. Reprinted by permission.