No abstract

The subject of this study is income polarization, an important but neglected dimension of income distribution. Estimates of two measures of income polarization are obtained for the population, rural, and urban sectors using household survey data on expenditures per capita for a sample of Asian countries. The findings include the following: Income polarization and inequality, the latter measured using the Gini coefficient, are highly positively correlated; in most countries, urban income polarization is higher than rural income polarization; and lastly, higher rates of growth in GDP and per capita GDP, higher levels of educational attainment of household heads, and high rates of employment in manufacturing may be important in keeping income polarization at low levels.

The views expressed in this paper are those of the authors and do not necessarily reflect the views and policies of the Asian Development Bank (ADB) or its Board of Governors or the governments they represent. ADB does not guarantee the accuracy of the data included in this publication and accepts no responsibility for any consequence of their use. By making any designation of or reference to a particular territory or geographic area, or by using the term "country" in this document, ADB does not intend to make any judgments as to the legal or other status of any territory or area.

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We are indebted to Piti Disyatat of the Bank of Thailand and Mikael Juselius of the Bank of Finland for sharing with us the Matlab code of the method explained in Borio, Disyatat, and Juselius (2013) and for clarifying questions on the methodology. Nevertheless, we are solely responsible for any errors. The views expressed in this paper are those of the authors and do not necessarily reflect the views and policies of the Asian Development Bank (ADB) or its Board of Governors or the governments they represent. ASIAN DEVELOPMENT BANKADB does not guarantee the accuracy of the data included in this publication and accepts no responsibility for any consequence of their use.By making any designation of or reference to a particular territory or geographic area, or by using the term "country" in this document, ADB does not intend to make any judgments as to the legal or other status of any territory or area. Note: In this publication, "$" refers to US dollars.The ADB Economics Working Paper Series is a forum for stimulating discussion and eliciting feedback on ongoing and recently completed research and policy studies undertaken by the Asian Development Bank (ADB) staff, consultants, or resource persons. The series deals with key economic and development problems, particularly those facing the Asia and Pacific region; as well as conceptual, analytical, or methodological issues relating to project/program economic analysis, and statistical data and measurement. The series aims to enhance the knowledge on Asia's development and policy challenges; strengthen analytical rigor and quality of ADB's country partnership strategies, and its subregional and country operations; and improve the quality and availability of statistical data and development indicators for monitoring development effectiveness.