Diet and IQ

Race , Genes , and IQ

According to The Bell Curve (New York: Free Press, 1994), Black Americans are genetically inferior to Whites. That's not the only point in Richard Herrnstein and Charles Murray's book. They also argue that there is something called "general intelligence" which is measured by IQ tests, socially important, and 60 percent "heritable" within Whites. (I'll explain heritability below.) But my target ...

جغرافیا یا ژئوپلیتیک IQ

Iq Gains1

Sumnzary.-Within each of 18 classrooms, an average of 20% of the children were reported to classroom teachers as showing unusual potential for intellectual gains. Eight nonths later these "unusual" children (who had actually been selected at random) showed significantly greater gains in IQ than did the remaining children in th: control group. These effects of teachers' expectancies operated pri...

Human hierarchies, health, and IQ.

R. M. SAPOLSKY’S REVIEW “THE INFLUENCE of social hierarchy on primate health” (29 Apr., p. 648) begins and ends with the conundrum that there is a graded, inverse association between low socioeconomic position (SEP) and important health outcomes in humans. The nicely described animal work on stress responses and social hierarchies forms the main portion of the piece. The application of these fi...

IQ, Social Mobility and Growth

Intelligent agents may contribute to higher technological growth, if assigned appropriate positions in the economy. These positive e ects on growth are unlikely to be internalized on a competitive labor market. The allocation of talent depends on the relative award the market assigns to intelligence versus other individual merits, which will also in uence intergenerational social mobility. To i...