This report by PERI economists Léonce Ndikumana and James Boyce provides estimates of capital flight from a representative sample of 30 African countries over 1970-2015 using an updated methodology. The report finds that this group of countries lost a combined $1.8 trillion through capital flight over the 46-year period. This amount vastly exceeds the stock of debt owed by these countries as of 2015 ($496.9 billion), making the group a "net creditor" to the rest of the world. Moreover, these countries lose more through capital flight than they receive in the form of aid or foreign private investment.

According to PERI Co-Director Gerald Epstein, since the mid-1980s, the short answer to this question is "no." Among the reasons: U.S. workers disproportionately finance the costs of U.S. imperialism through their taxes; and cheap imports facilitated by U.S. imperialism hurt U.S. workers' wages and job prospects. U.S. workers also pay in blood, as they constitute most of the U.S. military. But Epstein argues that, from the 1950s – 70s, U.S. workers did gain from imperialism, since they had more bargaining power and they paid a lower share of total taxes.

Sripad Motiram and Vamsi Vakulabharanam of PERI consider situations where individuals belonging to multiple groups inhabit a space that can be divided into smaller distinguishable units, a feature characterizing many cities in the world.  They conceptualize a phenomenon that they term "Grayness" - a combination of spatial integration based upon group-identity and income. Grayness is high when cities display a high degree of spatial co-existence in terms of both identity and income. They develop an index of Grayness, then apply this Grayness index to both the Indian city of Hyderabad and selected American cities.