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Decomposing World Income Distribution: Does The World Have A Middle Class?
Author(s) -
Milanovic Branko,
Yitzhaki Shlomo
Publication year - 2002
Publication title -
review of income and wealth
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.024
H-Index - 57
eISSN - 1475-4991
pISSN - 0034-6586
DOI - 10.1111/1475-4991.00046
Subject(s) - inequality , economics , income distribution , poverty , middle class , latin americans , distribution (mathematics) , economic inequality , homogeneous , income inequality metrics , demographic economics , population , development economics , gini coefficient , geography , economic growth , demography , political science , mathematics , market economy , mathematical analysis , combinatorics , sociology , law
Using the national income/expenditure distribution data from 111 countries, we decompose total inequality between the individuals in the world, by continents and regions. We use Yitzhaki’s Gini decomposition which allows for an exact breakdown of the Gini. We find that Asia is the most heterogeneous continent; between‐country inequality is much more important than inequality in incomes within countries. At the other extreme is Latin America where differences between the countries are small, but inequalities within the countries are large. Western Europe/North America is fairly homogeneous both in terms of countries’ mean incomes and income differences between individuals. If we divide the world population into three groups: the rich (those with incomes greater than Italy's mean income), the poor (those with incomes less than Western countries’ poverty line), and the middle class, we find that there are only 11 percent of people who are “world middle class”; 78 percent are poor, and 11 percent are rich.