Question: Study the IQ curves below.
(a) What is the statistical phenomenon shown?
(b) What is the socioeconomic implication shown?
Solution:
(a) Kurtosis. The inflection points are still located at IQ 85 and 115, i.e. the standard deviation is 15. The areas under curve for males and females are constant.
(b) Females tend to eliminate individual differences more intensely than males owing to severe intraspecific competitions in sexuality markets, i.e. discrimination is widespread in the society.