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"Closing borders is naive, the virus will come regardless" - this was the policy assumption that was repeatedly stated until mid-March by the WHO, the EU, as well as responsible authorities in Germany and other countries. Meanwhile, other states had started closing their borders to travellers...
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We study learning and influence in a setting where agents communicate according to an arbitrary social network and naïvely 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...
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Using quarterly data of 58 countries, this paper provides empirical evidence that mobile phone diffusion from 2007 to …). In addition, we test if the impact on mobile phone diffusion differs whether technologies are local or global standards … (Global System for Mobile Communications) technology prevent the diffusion of third generation (3G) mobile phones. We show …
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