钟形曲线，TheBellCurve.pdf
TheBellCurvebyRichardJ.HerrnsteinandCharlesMurrayPiratedEditionPART1.THEEMERGENCEOFACOGNITIVEELITE1CognitiveClassandEducation,1900-1990292CognitivePartitioningbyOccupation513TheEconomicPressuretoPartition634SteeperLadders,NarrowerGates91PART2COGNITIVECLASSESANDSOCIALBEHIOR5Poverty
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