The research summaries in the September 2012 issue of the IMF Research Bulletin are "Surges in Capital Flows: Why History Repeats Itself" (by Mahvash S. Qureshi) and "The LIC-BRIC Linkage: Growth Spillovers" (by Issouf Samake, Yongzheng Yang, and Catherine Pattillo). The Q&A covers "Seven Questions on Monetary Transmission in Low-Income Countries" (by Prachi Mishra and Peter Montiel). "Conversations with a Visiting Scholar" features an interview with IMF Fellow Olivier Coibion. Also included in this issue are details on the IMF Fellowship Program, visiting scholars at the IMF, a listing of recently published IMF Working Papers and Staff Discussion Notes, and an announcement on IMF Economic Review's first Impact Factor.

The April 2012 Global Financial Stability Report assesses changes in risks to financial stability over the past six months, focusing on sovereign vulnerabilities, risks stemming from private sector deleveraging, and assessing the continued resilience of emerging markets. The report probes the implications of recent reforms in the financial system for market perception of safe assets, and investigates the growing public and private costs of increased longevity risk from aging populations.

The research summaries in the March 2012 issue of the IMF Research Bulletin are "Foreign Direct Investment and the Crisis: Is This Time Different?" (by Yuko Kinoshita) and "Food Prices and Inflation" (by James P. Walsh). The Q&A covers seven questions on "Unemployment through the Prism of the Great Recession" (by Prakash Loungani). This issue also launches a new feature "Conversations with Visiting Scholars" with an interview with Tom Sargent, winner of the 2011 Nobel Prize in Economic Sciences. Also included in this issue are details on visiting scholars at the IMF, a listing of recently published IMF Working Papers, and information on the next issue of "IMF Economic Review."

The paper uses a combination of micro-level datasets to document the rise of income polarization—what some have referred to as the “hollowing out” of the income distribution—in the United States, since the 1970s. While in the initial decades more middle-income households moved up, rather than down, the income ladder, since the turn of the current century, most of polarization has been towards lower incomes. This result is striking and in contrast with findings of other recent contributions. In addition, the paper finds evidence that, after conditioning on income and household characteristics, the marginal propensity to consume from permanent changes in income has somewhat fallen in recent years. We assess the potential impacts of these trends on private consumption. During 1998-2013, the rise in income polarization and lower marginal propensity to consume have suppressed the level of real consumption at the aggregate level, by about 31⁄2 percent—equivalent to more than one year of consumption.

The Research Summaries in the September 2013 IMF Research Bulletin focus on “External Conditions and Debt Sustainability in Latin America” (Gustavo Adler and Sebastian Sosa) and “Monetary Policy Cyclicality in Emerging Markets” (Donal McGettigan, Kenji Moriyama, and Chad Steinberg). In the Q&A, Itai Aigur and Sunil Sharma discuss “Seven Questions on Macroprudential Policy Frameworks.” The Research Bulletin also includes an updated listing of recent IMF Working Papers, Staff Discussion Notes, and Recommended Readings from the IMF Bookstore, as well as information on a forthcoming conference. The IMF Economic Review’s new Impact Factor is also highlighted.

The research summaries in the June 2012 issue of the IMF Research Bulletin are "Public Debt in Advanced Economies and Its Spillover Effects on Long-Term Yields" (by C. Emre Alper and Lorenzo Forni) and "Expansionary Fiscal Contractions: The Empirical Evidence" (by Rina Bhattacharya and Sanchita Mukherjee). The Q&A covers "Seven Questions about Income Inequality" (by Laura Feiveson). Also included in this issue are details on visiting scholars at the IMF, a listing of recently published IMF Working Papers and Staff Discussion Notes, as well as information on IMF Economic Review.