We prove that the change in welfare of a representative consumer is summarized by the current and expected future values of the standard Solow productivity residual. The equivalence holds if the representative household maximizes utility while taking prices parametrically. This result justifies...

This paper examines the role of uncertainty shocks in a one-sector, representative-agent dynamic stochastic general-equilibrium model. When prices are flexible, uncertainty shocks are not capable of producing business-cycle comovements among key macro variables. With countercyclical markups...

This paper studies interaction of pharmaceutical regulation and parallel trade in a North-South framework. An innovative Örm located in the North can sell its drug only in the North or in both countries. Governments may limit reimbursement for the drug. Reimbursement limits reduce the Örmís...