返回Google圖書搜尋

Three Essays in Macroeconomics

出版	Massachusetts Institute of Technology, Department of Economics, 2006
URL	http://books.google.com.hk/books?id=AtzrNwAACAAJ&hl=&source=gbs_api

註釋(Cont.) Large positions are typically required for optimality. But smaller positions achieve substantial benefits. In a business-cycle simulation, I show that a 15% short equity position achieves over 40% of the welfare gains from completing markets. Chapter 2 is the product of joint work with Ivan Werning and analyzes how estate taxes should optimally be set. For an economy with altruistic parents facing productivity shocks, the optimal estate taxation is progressive: fortunate parents should face lower net returns on their inheritances. This progressivity reflects optimal mean reversion in consumption, which ensures that a long-run steady state exists with bounded inequality-avoiding immiseration. Chapter 3 is the product of joint work with Stavros Panageas. We study optimal consumption and portfolio choice in a framework where investors save for early retirement and assume that agents can adjust their labor supply only through an irreversible choice of their retirement time. We obtain closed form solutions and analyze the joint behavior of retirement time, portfolio choice, and consumption. Investing for early retirement tends to increase savings and stock market exposure, and reduce the marginal propensity to consume out of accumulated personal wealth.