Mixed-race people show intermediate IQ between parental races in 9 of 10 admixture studies. Latin American populations score higher on tests with more European ancestry and lower with more Amerindian. Intermediate skin color correlates with intermediate IQ in all 4 studies. Hispanics commit more crime than whites but less than blacks. US Hispanics with greater genetic homogeneity live longer. Brazilian mixed people have similar life expectancy to whites. Scottish mixed-race people have shortest life expectancy. Mixed marriages have 32.3% higher divorce risk than same-race. Outbreeding depression disrupts co-adaptive gene complexes between races. Inbreeding depression avoided by outbreeding but offset by outbreeding harms. European gene X beneficial in Europeans harmful in Africans due to interactions. No mechanism selects ''best'' genes from each race in mixing. Hispanics overperform whites in life expectancy due to behavior not genetics. Admixture studies show no IQ boost from race-mixing. Darker blacks score lower than lighter in 4 of 6 studies. Federal data shows Hispanics far more incarcerated than whites.