Connectedness and Contagion


Book Description

An argument that contagion is the most significant risk facing the financial system and that Dodd¬Frank has reduced the government's ability to respond effectively. The Dodd–Frank Act of 2010 was intended to reform financial policies in order to prevent another massive crisis such as the financial meltdown of 2008. Dodd–Frank is largely premised on the diagnosis that connectedness was the major problem in that crisis—that is, that financial institutions were overexposed to one another, resulting in a possible chain reaction of failures. In this book, Hal Scott argues that it is not connectedness but contagion that is the most significant element of systemic risk facing the financial system. Contagion is an indiscriminate run by short-term creditors of financial institutions that can render otherwise solvent institutions insolvent. It poses a serious risk because, as Scott explains, our financial system still depends on approximately $7.4 to $8.2 trillion of runnable and uninsured short-term liabilities, 60 percent of which are held by nonbanks. Scott argues that efforts by the Federal Reserve, the FDIC, and the Treasury to stop the contagion that exploded after the bankruptcy of Lehman Brothers lessened the economic damage. And yet Congress, spurred by the public's aversion to bailouts, has dramatically weakened the power of the government to respond to contagion, including limitations on the Fed's powers as a lender of last resort. Offering uniquely detailed forensic analyses of the Lehman Brothers and AIG failures, and suggesting alternative regulatory approaches, Scott makes the case that we need to restore and strengthen our weapons for fighting contagion.




Connectedness and Contagion


Book Description

An argument that contagion is the most significant risk facing the financial system and that Dodd¬Frank has reduced the government's ability to respond effectively. The Dodd–Frank Act of 2010 was intended to reform financial policies in order to prevent another massive crisis such as the financial meltdown of 2008. Dodd–Frank is largely premised on the diagnosis that connectedness was the major problem in that crisis—that is, that financial institutions were overexposed to one another, resulting in a possible chain reaction of failures. In this book, Hal Scott argues that it is not connectedness but contagion that is the most significant element of systemic risk facing the financial system. Contagion is an indiscriminate run by short-term creditors of financial institutions that can render otherwise solvent institutions insolvent. It poses a serious risk because, as Scott explains, our financial system still depends on approximately $7.4 to $8.2 trillion of runnable and uninsured short-term liabilities, 60 percent of which are held by nonbanks. Scott argues that efforts by the Federal Reserve, the FDIC, and the Treasury to stop the contagion that exploded after the bankruptcy of Lehman Brothers lessened the economic damage. And yet Congress, spurred by the public's aversion to bailouts, has dramatically weakened the power of the government to respond to contagion, including limitations on the Fed's powers as a lender of last resort. Offering uniquely detailed forensic analyses of the Lehman Brothers and AIG failures, and suggesting alternative regulatory approaches, Scott makes the case that we need to restore and strengthen our weapons for fighting contagion.




Connected


Book Description

Celebrated scientists Nicholas Christakis and James Fowler explain the amazing power of social networks and our profound influence on one another's lives. Your colleague's husband's sister can make you fat, even if you don't know her. A happy neighbor has more impact on your happiness than a happy spouse. These startling revelations of how much we truly influence one another are revealed in the studies of Dr. Christakis and Fowler, which have repeatedly made front-page news nationwide. In Connected, the authors explain why emotions are contagious, how health behaviors spread, why the rich get richer, even how we find and choose our partners. Intriguing and entertaining, Connected overturns the notion of the individual and provides a revolutionary paradigm-that social networks influence our ideas, emotions, health, relationships, behavior, politics, and much more. It will change the way we think about every aspect of our lives.




Contagious


Book Description

DIVShows how narratives of contagion structure communities of belonging and how the lessons of these narratives are incorporated into sociological theories of cultural transmission and community formation./div




Interconnectedness and Contagion Analysis: A Practical Framework


Book Description

The analysis of interconnectedness and contagion is an important part of the financial stability and risk assessment of a country’s financial system. This paper offers detailed and practical guidance on how to conduct a comprehensive analysis of interconnectedness and contagion for a country’s financial system under various circumstances. We survey current approaches at the IMF for analyzing interconnectedness within the interbank, cross-sector and cross-border dimensions through an overview and examples of the data and methodologies used in the Financial Sector Assessment Program. Finally, this paper offers practical advice on how to interpret results and discusses potential financial stability policy recommendations that can be drawn from this type of in-depth analysis.




Financial and Macroeconomic Connectedness


Book Description

Connections among different assets, asset classes, portfolios, and the stocks of individual institutions are critical in examining financial markets. Interest in financial markets implies interest in underlying macroeconomic fundamentals. In Financial and Macroeconomic Connectedness, Frank Diebold and Kamil Yilmaz propose a simple framework for defining, measuring, and monitoring connectedness, which is central to finance and macroeconomics. These measures of connectedness are theoretically rigorous yet empirically relevant. The approach to connectedness proposed by the authors is intimately related to the familiar econometric notion of variance decomposition. The full set of variance decompositions from vector auto-regressions produces the core of the 'connectedness table.' The connectedness table makes clear how one can begin with the most disaggregated pair-wise directional connectedness measures and aggregate them in various ways to obtain total connectedness measures. The authors also show that variance decompositions define weighted, directed networks, so that these proposed connectedness measures are intimately related to key measures of connectedness used in the network literature. After describing their methods in the first part of the book, the authors proceed to characterize daily return and volatility connectedness across major asset (stock, bond, foreign exchange and commodity) markets as well as the financial institutions within the U.S. and across countries since late 1990s. These specific measures of volatility connectedness show that stock markets played a critical role in spreading the volatility shocks from the U.S. to other countries. Furthermore, while the return connectedness across stock markets increased gradually over time the volatility connectedness measures were subject to significant jumps during major crisis events. This book examines not only financial connectedness, but also real fundamental connectedness. In particular, the authors show that global business cycle connectedness is economically significant and time-varying, that the U.S. has disproportionately high connectedness to others, and that pairwise country connectedness is inversely related to bilateral trade surpluses.




Emotional Contagion


Book Description

A study of the phenomenon of emotion contagion, or the communication of mood to others.




CoMap: Mapping Contagion in the Euro Area Banking Sector


Book Description

This paper presents a novel approach to investigate and model the network of euro area banks’ large exposures within the global banking system. Drawing on a unique dataset, the paper documents the degree of interconnectedness and systemic risk of the euro area banking system based on bilateral linkages. We develop a Contagion Mapping model fully calibrated with bank-level data to study the contagion potential of an exogenous shock via credit and funding risks. We find that tipping points shifting the euro area banking system from a less vulnerable state to a highly vulnerable state are a non-linear function of the combination of network structures and bank-specific characteristics.




How Behavior Spreads


Book Description

A new, counterintuitive theory for how social networks influence the spread of behavior New social movements, technologies, and public-health initiatives often struggle to take off, yet many diseases disperse rapidly without issue. Can the lessons learned from the viral diffusion of diseases improve the spread of beneficial behaviors and innovations? How Behavior Spreads presents over a decade of original research examining how changes in societal behavior—in voting, health, technology, and finance—occur and the ways social networks can be used to influence how they propagate. Damon Centola's startling findings show that the same conditions that accelerate the viral expansion of an epidemic unexpectedly inhibit the spread of behaviors. How Behavior Spreads is a must-read for anyone interested in how the theory of social networks can transform our world.




Transmission of Financial Crises and Contagion:


Book Description

Financial crises often transmit across geographical borders and different asset classes. Modeling these interactions is empirically challenging, and many of the proposed methods give different results when applied to the same data sets. In this book the authors set out their work on a general framework for modeling the transmission of financial crises using latent factor models. They show how their framework encompasses a number of other empirical contagion models and why the results between the models differ. The book builds a framework which begins from considering contagion in the bond markets during 1997-1998 across a number of countries, and culminates in a model which encompasses multiple assets across multiple countries through over a decade of crisis events from East Asia in 1997-1998 to the sub prime crisis during 2008. Program code to support implementation of similar models is available.