At its base is a philosophy ages old: Human misery is natural and beyond human re-demption; inequality is fated; and people deserve, by virtue of their native talents, the positions they have in society. From that ideological base, Herrnstein and Murray build a case that critics cannot simply dismiss out of hand.The book contends that Herrnstein and Murray's data explain, at best, only a limited amount of social inequality in the USA (between 5% to 10%) and that the analysis of the data in the Bell Curve is itself flawed.
subordination means material deprivation for students, which in turn impairs their achievement; two, subordination usually involves group segregation and concentration, which, by multiplying disadvantage and drawing all group members into difficult learning situations, undercuts academic achievement; and three, subordination produces a stigmatized identity of inferiority, which in turn breeds resignation or rebellion, both of which limit academic achievement. The histories of African Americans and Latino Americans, as well as their current conditions, more than suffice to explain why their members tend to score lower than whites on tests and also why they do less well in the race for success. The American case fits the global pattern; it is not genes but caste positions that explain the apparent differences in cognitive performance.Notable examples of such groups include Koreans in Japan compared with Koreans in the USA, and the change in perception of Jews in the USA from being regarded as "dull" in the early twentieth century to being regarded as part of a "cognitive elite" now.