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作者：Niehaus, Paul
作者单位：University of California System; University of California San Diego
摘要：Knowledge sharing is economically important but also typically incomplete: we filter our communication. This paper analyzes the consequences of filtering. In the model, homogeneous agents share knowledge with their peers whenever the private benefits exceed communication costs. The welfare implications of this transmission mechanism hinge on whether units of knowledge complement, substitute for, or are independent of each other. Both substitutability and complementarity generate externalities;...
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作者：Papanikolaou, Dimitris
作者单位：Northwestern University
摘要：I explore the implications for asset prices and macroeconomic dynamics of shocks that improve real investment opportunities and thus affect the representative household's marginal utility. These investment shocks generate differences in risk premia due to their heterogeneous impact on firms: they benefit firms producing investment relative to firms producing consumption goods and increase the value of growth opportunities relative to the value of existing assets. Using data on asset returns, I...
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作者：Berman, Eli; Shapiro, Jacob N.; Felter, Joseph H.
作者单位：University of California System; University of California San Diego; Princeton University; Stanford University
摘要：We develop and test an economic theory of insurgency motivated by the informal literature and by recent military doctrine. We model a three-way contest between violent rebels, a government seeking to minimize violence by mixing service provision and coercion, and civilians deciding whether to share information about insurgents. We test the model using panel data from Iraq on violence against Coalition and Iraqi forces, reconstruction spending, and community characteristics (sectarian status, s...
