Is there a tradeoff between raising growth and reducing inequality and poverty? This paper reviews the theoretical and empirical literature on the complex links between growth, inequality, and poverty, with causation going in both directions. The evidence suggests that growth can be effective in reducing poverty, but its impact on inequality is ambiguous and depends on the underlying sources of growth. The impact of poverty and inequality on growth is likewise ambiguous, as several channels mediate the relationship. But most plausible mechanisms suggest that poverty and inequality reduce growth, at least in the long run. Policies play a role in shaping these relationships and those designed to improve equality of opportunity can simultaneously improve inclusiveness and growth.

Essays exploring the relationship between economic growth and inequality and the implications for policy makers.

This paper shows that growth and income distribution dynamics are closely linked through occupation, financial intermediation, and education. We use the micro data from Thailand for 1976-1996. The compositional changes across these characteristics account for half of the Thai inequality increase and forty percent of the Thai growth and poverty reduction. Financial deepening and educational expansion contributed to increasing inequality while occupational transformation contributed to poverty alleviation. The changes in income gaps across the income-status groups, that is, divergence and then convergence, give rise to inverted-U inequality dynamics. These two growth-related components of inequality dynamics, composition and income-gap dynamics, explain virtually all the change in overall inequality, except its initial rise. Thus, inequality dynamics can be viewed as integral part of wider process of growth as Kuznets speculated.

This paper analyzes the extent of income inequality from a global perspective, its drivers, and what to do about it. The drivers of inequality vary widely amongst countries, with some common drivers being the skill premium associated with technical change and globalization, weakening protection for labor, and lack of financial inclusion in developing countries. We find that increasing the income share of the poor and the middle class actually increases growth while a rising income share of the top 20 percent results in lower growth—that is, when the rich get richer, benefits do not trickle down. This suggests that policies need to be country specific but should focus on raising the income share of the poor, and ensuring there is no hollowing out of the middle class. To tackle inequality, financial inclusion is imperative in emerging and developing countries while in advanced economies, policies should focus on raising human capital and skills and making tax systems more progressive.

The relationship between growth, inequality, and poverty lies at the heart of development economics. This volume draws together many of the most important recent contributions to the controversies surrounding this topic. Some of the chapters help explain why there is profound disagreement on crucial issues of growth, poverty and inequality within academic circles, and among organizations and various groups active in the development field. Another central theme is the cross-country evidence on the relationship between growth and poverty, and the extent to which it is valid to draw policy conclusions from this empirical evidence. The volume also shows how new microeconomic techniques such as poverty maps and microsimulation models can be used to improve poverty analysis and the design of pro-poor policies. The overall conclusion points to the need for diverse strategies towards growth and poverty, rather than simple blanket policy rules. Initial conditions, specific country structures, and time horizons all play a significant role. Initial conditions affect the speed with which growth reduces poverty and can also determine whether policies such as trade liberalization have a pro-poor or an anti-poor outcome. Improved education is valuable in itself, and also contributes to poverty reduction; but its effect on inequality depends on supply and demand factors, which differ significantly across countries. Likewise, the quantitative impact on poverty of redistribution from the rich to the poor vis-à-vis an increase in total national income can vary greatly across countries. Hence the need for creative approaches to poverty which take full account of the specific circumstances of individual nations and which assign a central role to inequality analysis in the discussion of poverty-alleviation policies.

One side in the current debate about who benefits from growth has focused solely on average impacts on poverty and inequality, while the other side has focused on the diverse welfare impacts found beneath the averages. Both sides have a point.

Income inequality is rising. A quarter of a century ago, the average disposable income of the richest 10% in OECD countries was around seven times higher than that of the poorest 10%; today, it's around 9½ times higher. Why does this matter? Many fear this widening gap is hurting individuals, societies and even economies. This book explores income inequality across five main headings. It starts by explaining some key terms in the inequality debate. It then examines recent trends and explains why income inequality varies between countries. Next it looks at why income gaps are growing and, in particular, at the rise of the 1%. It then looks at the consequences, including research that suggests widening inequality could hurt economic growth. Finally, it examines policies for addressing inequality and making economies more inclusive.