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How Homophily Affects the Speed of Learning and Best Response Dynamics

Golub, Benjamin - 2012

We examine how the speed of learning and best-response processes depends on homophily: the tendency of agents to associate disproportionately with those having similar traits. When agents' beliefs or behaviors are developed by averaging what they see among their neighbors, then convergence to a...

Persistent link: https://www.econbiz.de/10013116883

Networks of Military Alliances, Wars, and International Trade

Jackson, Matthew O.; Nei, Stephen - 2015

We investigate the role of networks of alliances in preventing (multilateral) interstate wars. We first show that, in the absence of international trade, no network of alliances is peaceful and stable. We then show that international trade induces peaceful and stable networks: trade increases...

Persistent link: https://www.econbiz.de/10014145358

Naive Learning in Social Networks : Convergence, Influence and Wisdom of Crowds

Jackson, Matthew O.; Golub, Benjamin - 2012

We study learning and influence in a setting where agents communicate according to an arbitrary social network and naively update their beliefs by repeatedly taking weighted averages of their neighbors' opinions. A focus is on conditions under which beliefs of all agents in large societies...

Persistent link: https://www.econbiz.de/10014049685

The Optimal Climate Policy Portfolio When Knowledge Spills Across Sectors

Massetti, Emanuele - 2010

This paper studies the implications for climate policy of the interactions between environmental and knowledge externalities. Using a numerical analysis performed with the hybrid integrated assessment model WITCH, extended to include mutual spillovers between the energy and the non-energy...

Persistent link: https://www.econbiz.de/10013138660

The Incentives to Participate in, and the Stability of, International Climate Coalitions : A Game-Theoretic Analysis Using the Witch Model

Bosetti, Valentina - 2012

, and the stability of broad coalitions to achieve ambitious climate change mitigation action. Only coalitions including all …. Some factors omitted from the analysis, which might improve coalition stability, include the co-benefits from mitigation …

Persistent link: https://www.econbiz.de/10013116831

How Does Climate Policy Affect Technical Change - An Analysis of the Direction and Pace of Technical Progress in a Climate-Economy Model

Carraro, Carlo - 2012

This paper analyses whether and how a climate policy designed to stabilize greenhouse gases in the atmosphere is likely to change the direction and pace of technical progress. The analysis is performed using an upgraded version of WITCH, a dynamic integrated regional model of the world economy....

Persistent link: https://www.econbiz.de/10012712471

A Good Opening : The Key to Make the Most of Unilateral Climate Action

Bosetti, Valentina; De Cian, Enrica - 2012

In this paper we argue that when a subgroup of countries cooperate on emission reduction, the optimal response of non-signatory countries reflects the interaction between three potentially opposing factors, the incentive to free-ride on the benefits of cooperation, the incentive to expand the...

Persistent link: https://www.econbiz.de/10014173973

Modeling Biased Technical Change - Implications for Climate Policy

Carraro, Carlo; De Cian, Enrica; Nicita, Lea - 2012

Climate-economy models aiming at quantifying the costs and effects of climate change impacts and policies have become important tools for climate policy decision-making. Although there are several important dimensions along which models differ, this paper focuses on a key component of climate...

Persistent link: https://www.econbiz.de/10014197713

Incentives and Stability of International Climate Coalitions : An Integrated Assessment

Bosetti, Valentina; Carraro, Carlo; De Cian, Enrica; … - 2012

This paper analyses the incentives to participate in and the stability of international climate coalitions. Using the … integrated assessment model WITCH, the analysis of coalitions’ profitability and stability is performed under alternative … on the profitability, stability, and “potential stability” of a number of coalitions which are “potentially effective” in …

Persistent link: https://www.econbiz.de/10014041690