Modeling Contagion of Behavior in Friendship Networks as Coordination Games

Author(s):  
Tobias Jordan ◽  
Philippe de Wilde ◽  
Fernando Buarque de Lima-Neto
2017 ◽  
Vol 62 (4) ◽  
pp. 525-533 ◽  
Author(s):  
Arielle M. Silverman ◽  
Ivan R. Molton ◽  
Amanda E. Smith ◽  
Mark P. Jensen ◽  
Geoffrey L. Cohen

Author(s):  
Andrea Lorenzo Capussela

This book offers an interpretation of Italy’s decline, which began two decades before the Great Recession. It argues that its deeper roots lie in the political economy of growth. This interpretation is illustrated through a discussion of Italy’s political and economic history since its unification, in 1861. The emphasis is placed on the country’s convergence to the productivity frontier and TFP performance, and on the evolution of its social order and institutions. The lens through which its history is reviewed, to illuminate the origins and evolution of the current constraints to growth, is drawn from institutional economics and Schumpeterian growth theory. It is exemplified by analysing two alternative reactions to the insufficient provision of public goods: an opportunistic one—employing tax evasion, corruption, or clientelism as means to appropriate private goods—and one based on enforcing political accountability. From the perspective of ordinary citizens and firms such social dilemmas can typically be modelled as coordination games, which have multiple equilibria. Self-interested rationality can thus lead to a spiral, in which several mutually reinforcing vicious circles lead society onto an inefficient equilibrium characterized by low political accountability and weak rule of law. The book follows the gradual setting in of this spiral, despite an ambitious attempt at institutional reform, in 1962–4, and its resumption after a severe endogenous shock, in 1992–4. It concludes that innovative ideas can overcome the constraints posed by that spiral, and ease the country’s shift onto a fairer and more efficient equilibrium.


Author(s):  
Andrew Kahn ◽  
Mark Lipovetsky ◽  
Irina Reyfman ◽  
Stephanie Sandler

The chapter examines the emergence of literature from coteries and domestic routine. It describes how male poetic circles, held together by friendship and common intellectual interests, produced the interconnected institutions of literature necessary to literature. While early in the century, women writers mostly worked privately, they eventually moved into more public venues such as the salon. An interest in subjectivity, the self, and friendship networks, which were also reading communities, fostered the creation of a performative and reflective self that gave rise to literary heroes to satisfy the new interests and demands of writers and readers.


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