Model letter U upside of Simon KuznetsThe model U is s. Kuznets, American economist, built from empirical studies in 1955, research on the relationship between per capita income and inequality in income distribution. S. Kuznets was also a pioneer in the study of this relationship.S. Kuznets used the ratio of the income of the richest 20% of the income sovới 60% of the poorest (Kuznets ratio). He conducted the study with a small group of developing countries and the developed countries. The results showed that in the developing countries, the situation of inequality of income tend to be higher than that of developed countries
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