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Publications (99)
Working Paper
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– Relative and absolute perspectives
This paper presents the first global and regional estimates of polarization and bipolarization spanning the period 1960–2020. The study relies on group data to implement a flexible parametric model to obtain the global income distribution and polarization estimates. The study introduces a battery of...
Working Paper
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Monitoring health is key for identifying priorities in public health planning and improving healthcare services. Life expectancy has conventionally been regarded as a valuable indicator to compare the health status of different populations. However, this measure is simply the mean of the...
Working Paper
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This paper seeks to understand whether the way in which inequality is communicated through measurements influences individuals’ fairness perceptions regarding wealth inequality. It begins from the premise that prominent measures of inequality, such as the Gini coefficient, fall short of providing an...
Journal Article
– Examples from rational choice theory and behavioural economics
Using illustrations from research on inequality, this essay makes a case for ‘behavioural synthesis’, that is the reconciliation between neo-classical and behavioural economics. Focusing on selected theories of absolute and relative inequality, we first give a brief critique of utilitarian models...
Working Paper
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– A k-means approach
This paper employs k-means clustering, a multidimensional pattern recognition method, to categorize countries using information from five Varieties of Democracy indices. K-means country clusters are similar but not entirely identical to both k-medians clusters and arbitrary groups formed using only...
Book Chapter
What is the relationship between inequality and growth? This question has occupied and fascinated social scientists for more than a century. This chapter critically reviews the recent empirical and theoretical literature on the complex interplay between inequality and economic growth. Inequality...
Book Chapter
– Trends, policies, and controversies
Reducing poverty and inequality and promoting inclusive growth are fundamental to achieving the UN Sustainable Development Goals (SDGs), approved by the UN General Assembly in September 2015. The first target of SDG1 is to eradicate extreme poverty, while SDG10 focuses on reducing inequality within...
Research on how income inequality affects borrowing behaviour reignited after the 2008 global recession. One prevailing theory is that rising income inequality in the US and other high-income economies eroded real household incomes and prompted more and more borrowing. This growing debt culminated...
Many countries today experience increasing or persistent income inequality, a major concern for citizens and politicians alike. This concern is justified; as some individuals get richer, most people’s real incomes stagnate. Widening income inequality brings challenges to a nation’s development...
Working Paper
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– Examining the impact of relative income on formal and informal debt in South Africa
How does income inequality impact the propensity for and levels of formal and informal household debt? This paper assesses this question using the two most recent waves of the South African Living Conditions Survey. A range of linear models as well as a zero-inflated Poisson model are employed, and...
Blog
Early in October 2022, international and Colombian researchers gathered together for three days at the UNIANDES campus, located at the foot of the impressive Monserrate in Bogotá, Colombia. They were there to discuss their latest advances in inequality research. This was the second WIDER Development...
Blog
For several decades, UNU-WIDER has actively worked on pathfinding and groundbreaking research on inequalities. We host one of the most extensive collections of income inequality statistics in the world freely available and updated annually. I have written previously about how the institute was...
Working Paper
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– The role of different parts of the income distribution
In this paper we reassess the relationship between inequality and human development, focusing on the differential effect associated with the concentration of national income at different parts of the income distribution. To do so, we rely on a large global panel of countries over the last decades...
Background Note
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Introduction Only recently has the importance and potential of behavioural sciences been recognized as a critical tool to achieve the Sustainable Development Goals (SDGs). This long-awaited recognition comes from the highest levels of the United Nations, with the Secretary-General recently issuing a...
Working Paper
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Reducing poverty and inequality and promoting inclusive growth are fundamental to achieving the United Nations Sustainable Development Goals. Much has changed in the global economy in recent decades and perspectives on progress made vary widely. This is even more so in light of the ongoing COVID-19...
Journal Article
This peer-reviewed research is available free of charge. UNU-WIDER believes that research is a global public good and supports Open Access.
Inequality is a major international development challenge. This is so from an ethical perspective and because greater inequality is perceived to be detrimental to key socioeconomic and political outcomes. Still, informed debate requires clear evidence. This article contributes by taking stock and...
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