Objective The general theme of this research is to introduce the notion of large-scale economic networks into the mainstream of economics, in particular in macroeconomics and international trade. Economic agents often do not have access to all the relevant information they may need: whom they know, whom they interact with represents a small fraction of all possible interactions. I model this limited set of interactions as a network: agents are nodes, and they only interact with other agents they have formed a link with. What is the shape of this network of linkages between agents, and how does it evolve? More importantly, what are the aggregate implications of the shape of this network? These are the broad questions I will address in this research. I will consider six specific applications of this unifying idea in various fields: international trade, IO, macroeconomics and growth. In international trade, we have only a very crude understanding of the frictions that prevent most firms from exporting. I propose to model trade frictions as a dynamic network: at a point in time, a given exporter only has information about a limited set of potential customers in a few foreign countries; over time, this exporter discovers new export opportunities, and its network of customers evolves dynamically. I offer theoretical and empirical tools to understand and analyze the properties of this network, and show how it shapes aggregate trade patterns. In IO and macroeconomics, most plants only have few suppliers. I will model the input-output linkages between plants as a dynamic network; I offer theoretical and empirical tools to analyze this network, and show how it shapes the propagation of plant level shocks to generate aggregate fluctuations. Human capital accumulation is key to economic growth and development, with workers learning from each other. I will model these growth-enhancing interactions as a dynamic network; I will show how the properties of this network shape long run growth. Fields of science social scienceseconomics and businesseconomicsmacroeconomicssocial scienceseconomics and businessbusiness and managementcommerce Programme(s) FP7-IDEAS-ERC - Specific programme: "Ideas" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013) Topic(s) ERC-SG-SH1 - ERC Starting Grant - Individuals, institutions and markets Call for proposal ERC-2013-StG See other projects for this call Funding Scheme ERC-SG - ERC Starting Grant Host institution FONDATION NATIONALE DES SCIENCES POLITIQUES EU contribution € 643 392,36 Address RUE SAINT GUILLAUME 27 75341 Paris France See on map Region Ile-de-France Ile-de-France Paris Activity type Higher or Secondary Education Establishments Principal investigator Thomas Chaney (Mr.) Administrative Contact Cathy Benard (Ms.) Links Contact the organisation Opens in new window Website Opens in new window Total cost No data Beneficiaries (2) Sort alphabetically Sort by EU Contribution Expand all Collapse all FONDATION NATIONALE DES SCIENCES POLITIQUES France EU contribution € 643 392,36 Address RUE SAINT GUILLAUME 27 75341 Paris See on map Region Ile-de-France Ile-de-France Paris Activity type Higher or Secondary Education Establishments Principal investigator Thomas Chaney (Mr.) Administrative Contact Cathy Benard (Ms.) Links Contact the organisation Opens in new window Website Opens in new window Total cost No data FONDATION JEAN JACQUES LAFFONT,TOULOUSE SCIENCES ECONOMIQUES Participation ended France EU contribution € 526 007,64 Address 5E ETAGE, 1 ESP DE L'UNIVERSITE 31080 Toulouse See on map Region Occitanie Midi-Pyrénées Haute-Garonne Activity type Research Organisations Administrative Contact Céline Claustre (Ms.) Links Contact the organisation Opens in new window Total cost No data