TY - JOUR AU - Abel,Andrew B. TI - On the Invariance of the Rate of Return to Convex Adjustment Costs JF - National Bureau of Economic Research Working Paper Series VL - No. 8649 PY - 2001 Y2 - December 2001 UR - http://www.nber.org/papers/w8649 L1 - http://www.nber.org/papers/w8649.pdf N1 - Author contact info: Andrew B. Abel Wharton School University of Pennsylvania 2315 Steinberg Hall - Dietrich Hall Philadelphia, PA 19104-6367 Tel: 215/898-4801 Fax: 215/573-7244 E-Mail: abel@wharton.upenn.edu M1 - published as Abel, Andrew B. "On The Invariance Of The Rate Of Return To Convex Adjustment Costs," Review of Economic Dynamics, 2002, v5(3,Jul), 586-601. AB - The Modified Golden Rule, which relates the rate of return on capital and the growth rate of the capital stock along long-run growth paths that maximize the utility of a representative infinitely-lived consumer, is invariant to the introduction of convex capital adjustment costs. Therefore, along balanced growth paths in neoclassical optimal growth models with an exogenous long-run growth rate of capital, the rate of return is invariant to the introduction of convex adjustment costs, though the capital-labor ratio is reduced along such paths. In AK models, convex adjustment costs reduce the growth rate and rate of return on capital. ER -