Economists typically locate the origins of the theory of externalities in A.C. Pigou's The Economics of Welfare (1920 … the subject of externalities in a serious way, the very real externality phenomena—pollution, etc.—that had concerned … conceptions of externalities, framed by changing ideas about what economic theory is attempting to achieve …

Local network externalities are present when the network externalities associated with entering a certain network … the consequences of local network externalities within a framework where two networks compete on the Hotelling circle. We … first show that local network externalities, in contrast to global network externalities, do not sharpen competition. Then …

heterogeneity in competition is easily measured. I develop and estimate a matching model with externalities, where the value of a …

theory predicts that an increase in the rebate rate offered by a given charity relative to a substitute charity will shift …

whether utility regulators should broaden their consider include positive externalities from electric vehicles such as …