The wave of upbeat stories on the developing world's emerging middle class has reinvigorated a debate on how social class in general and the middle class in particular ought to be defined and empirically measured. With the aim of adding clarity to this debate, this dissertation provides a...

Income inequality is on the rise, and everyone, from President Obama and Pope Francis to Prince Charles and Standard & Poor's, is talking about it. But these conversations about what are arguably the most significant changes in the distribution of incomes and earnings since the 1940s are leading...

Turkey's poverty reduction performance in the 2000s has been remarkably consistent. Extreme and moderate poverty have fallen considerably since 2003. Between 2002 and 2011, extreme poverty fell from 13 percent to 5 percent, while moderate poverty halved from 44 percent to 22 percent...

Data show that middle-income households have continued moving down, and less so up, the income distribution in the United States since the 1970s-a phenomenon that is often referred to as the polarization or 'hollowing out' of the income distribution. While the level of income polarization is...